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MultiPSK 4.26.1

Clock 1.10.1

Multidem 2.5.1

Modes supported by Multipsk:

  • Phase Shift Keying modes:
    • BPSK: BPSK31-63-125-250 / CHIP (64/128) / PSK10 / PSKFEC31 / PSKAM10-31-50
    • BPSK with SSTV: PSK63 F - PSK220F + DIGISSTV "Run"
    • QPSK: QPSK31-63-125-250
    • 8PSK: VDL2
    • MPSK: MT63
    • PACKET BPSK1200-250-63-31 + APRS+ DIGISSTV "Run"
    • MIL-STD-188-110A - 4285
    • HFDL
    • Balises EPIRB-ELT-PLB
  • On-Off Keying Modes: CW / CCW-OOK / CCW-FSK / QRSS
  • Amplitude modulation mode: APT faxes (NOAA satellites)
  • Frequency Shift Keying modes:
    • PACKET: 110-300-1200 bauds + APRS+ DIGISSTV "Run"
    • PACTOR 1 / AMTOR FEC-Navtex / AMTOR ARQ / SITOR A
    • ASCII / RTTY 45-50-75-100-110-150-200 / SYNOP + SHIP / IEC 870-5
    • 1382 / BIIS / GMDSS DSC / ACARS (VHF) / DGPS / NWR SAME / ARQ-E / ARQ-E3
  • Multi Frequency Shift Keying modes:
    • MFSK8 / MFSK16/32/64 (+SSTV)
    • OLIVIA / Contestia / RTTYM / VOICE
    • THROB/THROBX
    • DominoF / DominoEX / THOR
    • PAX / PAX2
    • Automatic Link Establishment (see http://www.hflink.com) MIL-STD-188-141A+
      ARQ FAE / ALE400 + ARQ FAE
    • DTMF, SELCAL
    • JT65 (A B and C)
    • LENTUS
    • COQUELET
  • Base band modes: POCSAG, AIS, Packet 9600 bauds (G3RUH)
  • Hellschreiber modes: FELD HELL / FM HELL(105-245) / PSK HELL / HELL 80
  • Graphic modes: HF FAX / SSTV / PSK SSTV modes (mentioned above) / MFSK16 SSTV (mentioned above)
  • DSP modes: Filters / Analysis / Binaural CW reception
  • RTTY, CW, BPSK31, BPSK63 and PSKFEC31 Panoramics
  • Identifiers: Video ID / RS ID / Call ID
  • TCP/IP digital modem
  • Integered SdR demodulator/modulator

    New release (4.26.1) of MULTIPSK
    The new release of MultiPSK (4.26.1) is on my Web site (http://f6cte.free.fr).
    The mirror site is Earl's, N8KBR: http://www.eqth.info/multipsk/ (click on "United States Download Site").

    Multipsk associated to Clock are freeware programs but with functions submitted to a licence (by user key).

    The main improvements of MULTIPSK 4.26.1
    are the following:
     
    1)  Improvements:

    1.1 GMDSS
    In "Other options GMDSS", addition of the button "HF frequency display": the HF frequency in MHz is displayed (in first position) on each received message, if the QSO field "Freq MHz" is filled with the HF frequency.
     
    1.2 VDL2
    The "TCP/IP" button, if pushed, offers a TCP/IP server on port 3121, for transmission of the received data to a "TCP/IP client" application.
    Consequently, with the main TCP/IP server, it is possible to interface VDL2-Display and PlanePlotter, each application receiving exactly the same data from Multipsk.


    1.3 ACARS
    Improvement of the SdR AM demodulation for ACARS.

    2)  Miscellaneous
     
    ·     Addition of a possibility of daily back-up of the received and transmitted data ("QSO" panel).

    ·     Each RTL/SDR dongle, once used, has its parameters (identifier, shift, correction, frequency, demodulation mode (USB...), selected VFO (A or B)) stored in the RTL_SDR.TXT file. A maximum of 255 different RTL dongles can be managed thanks to this file.

    ·     New parameter available on the Multipsk command line (for the TCP/IP control): TCP_IP_ON_3122 ... TCP_IP_ON_3132 to switch the TCP/IP interface on the specified port (3122 to 3132).
    Example: C:\MULTIPSK\MULTIPSK.EXE TCP_IP_ON_3125 RX_TX_SCREEN MINIMIZE

    ·      Multipsk_planner on my WEB site http://f6cte.free.fr/Multipsk_planner.zip
    This demonstration program gives the possibility to the user to realize a monitoring planning (modes, frequencies and end times) either for Multipsk interfaced with Commander (DXLAB), or for Multipsk interfaced with a SdR (FCD, FCD+, RTL/SDR, Softrock), this one controlling Multipsk, through a TCP/IP link - sources and .EXE (Version 1)
    Example (Mode, SDR HF , SDR AF, AF and mode end time):
    ACARS 131715000 10000 200 Z08:05:00
    VDL2 136963000 12000 200 Z09:05:00

    New releases of The main improvements of MULTIPSK 4.25.1
    are the following:
    - Integration of the new RS ID system extension ("EXTENSION_FLDIGI" code 6).
    - Improvement of the JT65 decoding (with the "KVASD" button extracted).
    - Removal of the PSK windowing to transmit in 110A.
    - Display of the UIN identifier in EPRIB/ELT/PLB mode (UHF distress beacons).
    - Bug about the RS ID search in the SdR waterfall, fixed.


    New releases of MultiPSK (4.25) and Clock (1.10).
    The main improvement of CLOCK 1.10 is the decoding of the time frames transmitted by the BBC radio station on 198 KHz (Long Waves). The PC synchronization on these time frames is only available for licencied copies.
    Note: the transmission of a BBC time frame lasts two seconds, at the rate of 25 digital binary data per second, transmitted on a biphase modulation. On the SSB receiver, the user adjusts the frequency to 198.5 KHz in LSB or 197.5 KHz in USB.
    The main improvements of MULTIPSK 4.25
    are the following:

     


    1) Decoding of the UHF EPRIB/ELT/PLB distress beacons on 406 MHz
    EPRIB ("Emergency Position-Indicating Radio Beacons" for ships), ELT "Emergency Locator Transmitters" for planes) and PLB ("Personal Locator Beacons" for individuals) beacons are tracking transmitters which permit the detection and location of ships, planes and people in distress. These beacons use a BPSK 400 bauds professional mode. They transmit a signal on 406 MHz in case in distress.
    The signal is received and located by COSPAS-SARSAT satellites.
    Note: the distress signal (about 0.5 second of transmission) is automatically transmitted every 50 seconds. A test transmission (not relayed by COSPAS-SARSAT satellites) is transmitted once, by activating it manually.
    For Hams and SWL, a signal (transmitted in your area) can be received:
    either from the discriminator output of a classical UHF receiver via a direct connection to the PC sound card, or, possibly, from the receiver speaker through a simple direct connection to the PC sound card, or with a SdR receiver (FunCube Dongle, RTL SDR,...) and directly demodulated (in FM) by Multipsk.
    The specific WEB site associated to the reception of these beacons is http://rg16.free.fr/A_EPIRB.php
    This mode is available for licencied copies, only (otherwise, the decoding is stopped after 5 minutes).
    See general specifications further on.
    2) Improvements:
    2.1 9600 bauds Packet
    9600 bauds Packet (G3RUH type) decoding has been added ("9.6" button in Packet mode). It is not very used and only in Ham UHF (430 MHz band). Demodulation must be done in FM. The FM demodulation of Multipsk could be possibly used (associated with a Funcube receiver, for example), by selecting the "FM x KHz" demodulation option and a bandwith around 20 KHz (to test).
    2.2 Specific WEB site associated to the Traffic window (in GMDSS, HFDL, ACARS and LENTUS)
    If the "WEB site" button is pushed, it is called the specific reception Multipsk WEB site, for the current mode (according to the mode, a priori: "http://rg16.free.fr/A_GMDSS.php", "http://rg16.free.fr/A_ACARS.php", "http://rg16.free.fr/A_HFDL.php" or "http://rg16.free.fr/Ajout_de_donnee_lentus.php") where is displayed all the receptions sent by Multipsk users). This WEB site can be called from Internet explorer or equivalent.
    2.3 APT (Fax)
    Improvement of the synchronisation.
    2.4 RS ID and Call ID on SdR waterfall
    Detection with automatic switching on the mode and on the frequency, of any RS ID on 44 KHz bandwidth (between the yellow vertical dashes), with the "RX" (permanently) and "Go!" (only one time) buttons. Same principle for the Call ID.
    2.5 Inversion of I and Q forced for FunCube and RTL/SDR SdR
    2.6 Improvement of the to and keys handling,t
    hese keys being associated with the macros sets (set 1 / set
    2.7 Call signs of ships are displayed in GMDSS and AIS if known in the Shipdata.txt file.
    2.8: in 110A, the RS ID is only transmitted in beacon mode and the TX base frequency depends on the position of the "1500 Hz" button: either 1500 Hz (for Ham transmissions), or 1800 Hz (for standard transmissions).
    3) Miscellaneous
    Note about translation of Multipsk.exe and Clock .exe: the 4.23 version of Multipsk/Clock has been completly translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (http://f6cte.free.fr/Translation_files.htm).

    EPIRB/ELT/PLB (UHF)
    Description :
    Baud rate: 1187.5 symbols/second.
    Modulation : each "biphase" symbol at 1187.5 bauds is composed of 2 "bits" almost out of phase (+/- 1,1 rad). The modulation is not differential. A symbol is equal to "1" if phase is positive then negative and to "0" if phase is negative then positive. The rise and fall are filtered to limit the necessary bandwidth. The flow of EPIRB symbols directly modulates in PSK the carrier at 406 MHz. So the transmission can be demodulated in PSK, but it is more simple (the minimum Signal to Noise ratio not being so good) to demodulate in FM. This because in PSK, the carrier phase must be followed and locked whereas in FM it is not necessary (the baseband signal is directly supplied).
    Reception mode: FM (or PSK)
    Character set : modified-Baudot code
    Shape of pulse : rectangular, but with rise and fall which are soften.
    Bandwidth : about 6 KHz
    Demodulation : non coherent (en FM)
    Synchronization : for bits, a suite of 15 "1" and for symbols, a specific synchronization frame.
    Detection code: yes on 21 bits for the first part and on 12 bits for the second part, if present.
    Interleaving : no
    Lowest S/N: about +3 dB,
    It is proposed a lot of different frames responding to many needs.
    Each EPIRB frame contains one or two data blocks (each one followed by a detection code):
    * always, a first block of 61 data bits transmitting in general, the registration country, an identifier of the station and, sometimes, a geographical position,
    * sometimes, a second block of 26 data bits defining precisely the position, in latitude and in longitude.

    The main improvements of MULTIPSK 4.24 are the following:
    1) Decoding of the RDS mode (on broadcast FM)
    The VHF mode RDS (for "Radio Data System") is used to transmit digital data (about the station, the program...) in parallel to the audio signal (mono or, possibly, stereo) of each FM transmission (wide band, 200 KHz) of the FM commercial band from 87.5 to 108 MHz.
    For Hams and SWL, it must be received with a VHF SdR receiver (FunCube Dongle Pro+, RTL SDR,...) and directly demodulated by Multipsk.
    See general specifications further on.
    2) Decoding/coding of the THOR mode
    This Incremental Frequency Keying mode created by Dave Freese (W1HKJ) in 2008
    derives from DominoEXE FEC with the following differences:
    · the number of interleavings is 10 instead of 4,
    · the secondary table is independent from the MFSK16 type primary table. It is reminded that it is automatically transmitted the information "Call", "Locator"...type, during moments when nothing is sent, the QSO being in progress, as a sort of "intelligent idling".
    For more details, see http://www.w1hkj.com/Modes/THORdesc.htm

     

    3) Decoding/coding of the MFSK32 and MFSK64 modes

    MFSK32 and MFSK64 modes are identical to the MFSK16 mode but at baud speeds and bandwidths multiple.
    4) Decoding of the APT faxes transmitted by NOAA satellites (first attempt of decoding)
    "APT" is worth for "Automatic Picture Transmission". It is a mode allowing transmission of fax pictures, used by the NOAA satellites 15 (137.620 MHz), 18 (137.9125 MHz) et 19 (137.100 MHz). It is transmitted a pair of fax pictures (one done during daylight and one in infra-red) in amplitude modulation of a 2400 Hz carrier, this one transmitted in FM on a 30 KHz bandwidth. For more details, see: http://www.canarysatellite.com/apt_format.html
    The receiver can be an SdR (FunCube Dongle for example). In this case, the FM demodulation can be done directly by Multipsk. It can be also used a demodulator connected to Multipsk via a virtual sound card, for example.
    5) Improvements:

    5.1 Direct interface with Funcube, RTL-SDR and Softrock SdR,
    From the Configuration screen, according to the SdR, the corresponding button will have to be be pushed: "RTL/SDR key", "Funcube" or "Softrock". Once pushed, from the "I/Q interface for SdR" panel, the "Direct via the sound card" option will be automatically activated. Although not strictly indispensable, the "+Speaker" button can be pushed to listen to the demodulated sound.
    Note: the use of a RTL-SDR key is a bit experimental as a specific installation procedure is required andifferent files are indispensable (see the Multipsk manual for details). Moreover, the gain anf frequency control is not very reliable (it is sometimes necessary to double the command).
    5.2 Control of the FunCube Dongle and the RTL/SDR receivers from the "Transceiver" window ("Transceiver" button)
    Multipsk proposes the possibility to control the frequency and the gain of a FunCube or a RTL/SDR receiver. The frequency is controlled as with Commander with the increment/decrement buttons and with the wheel mouse. The gain is controlled with a spinbutton.
    5.3 KISS mode proposed for 141A and ALE400 in APRS
    From UIVIEW, it is now possible to send and receive APRS positions (position reports only, without any acknowledgment) through an internal protocol transformation (FAE to/from PACKET).
    141A and, above all, ALE400 modes being sensitive modes, APRS frames can be sent at long distance, with UI-VIEW.
    Refer to the "141A and ALE400 APRS with UI-VIEW through Multipsk, easy" paper available on my WEB site, to use this function easily.
    5.4 Automatic correction of Doppler in BPSK31 (with the button called "Doppler"). In case of big ionospheric Doppler preventing the decoding of a powerful BPSK31 signal, this feature can help to counterbalance the Doppler drift and permits a decoding. So this button will be pushed if the decoding is not possible even with a powerful signal. This feature is interesting for low modulation speed (<=31 bauds but not beyond).
    5.5 APRS

     

    The APRS Packet, PAX/PAX2 and FAE in ALE ("141A") or ALE400 coding/decoding functions are no more limited in time.

    5.6 AIS

     

    Transmission of AIS positions to MarineTraffic.com can be done in UDP (in top of TCP, in connected mode). In UDP, there is no guarantee that all positions reach the WEB site http://www.marinetraffic.com/ais/, but there is no connection to maintain, as in TCP.

    5.7 DGPS

     

    Possibility to only display the rare DGPS messages 3, 7 and 16.

    5.8 JT65

     

    Improvement of the sensitivity.

    5.9 Improvement of the SDR AM (for ACARS) and "FM 12 KHz" (for AIS) demodulation

    5.10 "SSB", "USB", "LSB", "FM" and "AM" accepted in the Mode field of the QSO panel, for those who wants use the Multipsk log book also to note their phone QSO.

    6) Miscellaneous

    Note about translation of Multipsk.exe and Clock .exe: the 4.23 version of Multipsk/Clock has been completly translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (http://f6cte.free.fr/Translation_files.htm).

     

    Note about the ACARS/HFDL/GMDSS-Display programs from Mike Simpson
    Interested users can get details/download the program at the WEB address: http://www.rstools.info/DL.html
    These three programs extracts TCP/IP data from MultiPSK, respectively, in VHF Acars mode, HF Acars mode (HFDL) and GMDSS mode.

    Note about the JNOS program from Maiko (VE4KLM)

    This program downloadable on http://www.langelaar.net/projects/jnos2/win32 is able to transform a PC in Packet BBS (through Multipsk).

    The main improvements of MULTIPSK 4.22 are the following:
    1) Decoding of the professional mode POCSAG
    This professional mode is used, in VHF and UHF (mainly on the 466 MHz band), for radiopaging services , for transmission of messages to "pagers". POCSAG equipement is also used on UHF by Hams for there own net (on 439.9875 MHz).
    The logic signal (1/0) directly modulates the HF frequency in narrow FM (on about +/- 4.5 KHz) and is received in base band after FM demodulation.
    The receiver must be an SdR (FunDongle for example). The FM demodulation must be done either directly by Multipsk or by a demodulator connected to Multipsk via a virtual sound card, for example.
    Il is not advided to use a classical FM receiver. This because the POCSAG signal is transmitted in base band with very low frequencies (due to long suites of 0 or 1). On a FM receiver, it would normally be necessary to connect the sound card input to the receiver FM discriminator output (if it exists as it is not frequent). Unfortunatly, it is probable that the sound card will not transmit very low frequencies.
    This mode is available for licencied copies, only (otherwise, the decoding is stopped after 5 minutes).
    See general specifications further on.
    2) Decoding of the professional mode BIIS (1200)
    This MSK 1200 bauds professional mode is used, in VHF (35 to 36.25 MHz and 39.40 to 40.65 MHz), by different public services in Europe.
    This mode is physically similar to the 1382 mode (on two tones at 1200 and 1800 Hz), but the meaning of the packet of frames is different from 1382. Indeed, the first frame is always an address block. It is followed by the operation mode (category/function). These two frames can be followed by one or several frames.
    The receiver must be an SdR or not. The FM demodulation must be done either directly by Multipsk or by a demodulator connected to Multipsk via a virtual sound card, for example.
    This mode is available for licencied copies, only (otherwise, the decoding is stopped after 5 minutes).
    3) Meteor scatter in FELD HELL: it is given the possibility to transmit at 5 or 9 times the nominal speed (buttons "x5" and "x9"), for transmission in "Meteor scatter".
    4) Improvements:
    - Associated to the dual trace oscilloscope 0-20 KHz, addition of a sound recorder and a graph plotter.
    It is, now, possible to record a .WAV sound file in the format 48000 samples/second, 16 bits, stereo and, afterwards, to read and plot the data belonging to this recorded file, as a graph plotter. This function is simple and matches to the need of observing a digital signal either in base band or at the SdR receiver or program output (i.e. I/Q or demodulated output). The sound file can also be listened.
    Click on the "Tools" menu of the RX/TX screen, then select the first option ("Dual trace oscilloscope...").
    - Associated to the dual trace oscilloscope 0-20 KHz, addition of the E2=f(E1) graphic, "Lissajous" function (to graphically determine the phase difference between E1 and E2).
    - in SdR demodulation, addition of the "FM 16 KHz" to decode POCSAG.
    - The AFC ("Automatic Frequency Control", i.e. QRG pursuit) function has been added to the HF Fax mode. This option is useless for modern receivers, which are very stable.
    - Improvement of the GMDSS decoding and addition of a new option "Only correct frames" to only display the GMDSS frames with a correct check-sum.
    5) Miscellaneous
    Note about translation of Multipsk.exe and Clock .exe: the 4.21.1 version of Multipsk/Clock has been completly translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site "http://f6cte.free.fr/Translation_files.htm".

    The new releases of MultiPSK (4.21.1) and Multidem (2.4.1) are on my Web site (http://f6cte.free.fr).
    The main mirror site is Earl's, N8KBR: http://www.eqth.info/multipsk/index.html (click on "United States Download Site").
    Another mirror site isTerry's: http://g90swl.co.uk/multipsk/
    Multipsk associated to Clock are freeware programs but with functions submitted to a licence (by user key).
    AM/FM modulation/demodulation has been added to Multidem 2.4.1

    The main improvements of MULTIPSK 4.21.1 are the following:

    The possibility to export TCP/IP data at 48000 Hz has been added to Multidem 2.4.1.

    * In GMDSS, addition of a "Traffic" window: this function permits to display all the last received GMDSS messages, collected by a specific GMDSS WEB server.

    The "Traffic" button permits to display all the last GMDSS received messages, collected by a specific GMSS WEB server. In that case, Multipsk will transmit all the messages received by the user (Ham or SWL) to a WEB server. Multipsk will fetch and display all the collected Lentus messages during minutes 0, 5, 10...55. This function permits to follow ships route, beyond one's own distance of reception, to cover large areas.
    Note 1: To avoid broadcasting unreliable pieces of information, only messages with correct CRC will be sent to the GMDSS server.

    Note 2: GMDSS server files can be supplied (through an exchange of mails with the author) to constitute private GMDSS listening nets.

    * In ACARS and HFDL, addition of a "Traffic" window: this function permits to display all the plane position messages, collected by a specific WEB server (ACARS or HFDL).

    Note: ACARS or HFDL server files can be supplied (through an exchange of mails with the author) to constitute private ACARS or HFDL listening nets.

    * In Lentus, addition of a "Traffic" window: this function permits to display all the last received and transmitted Lentus messages, collected by a specific Lentus WEB server.

    * In DGPS, addition of information about the Station number and possibility of automatic switching to the DGPS detected speed ("Automatic" button).

    * in the QSO window, possibility to find a word in the text.

    * Possibility to receive TCP/IP data at 48000 Hz (to interface SdR programs, for example).

    * In APRS, GMDSS, ACARS and HFDL, there is a better display on Google Earth and local maps with dashes between dots, only if the "Display all" button is pushed.

    Miscellaneous

    The paper “Lentus easy with Multipsk.doc” has been updated and is available on my WEB site: http://f6cte.free.fr/LENTUS_easy_with_Multipsk.doc.

    The main improvements of MULTIPSK 4.21 are the following:

    1) Coding / Decoding of the new mode LENTUS
    This mode is used for QRP transmissions (down to a minimum S/N ratio of -34 dB) either in LF, MF and HF (14 MHz maximum) but not beyond.
    The recommended frequencies (on the XCVR) are the following (with an AF frequency of 1000 Hz, in USB): 136.3, 1837.0, 3589.0, 7037.5, 10138.7, 14074.0, 14095.6 KHz.
    The detailled specifications of this mode are given, in English, in the Word document "Specifications 1.0 of the Lentus mode" situated in the "Specifications" heading on my WEB site (English page).
    See general specifications further on.

    2) CALL_ID fixed
    Due to the correction of a bug in the Call ID code source, the new CALL ID is not compatible with the old CALL ID (Multipsk versions <4.21)

    3) New TCP/IP commands
    To control the ARQ FAE sub-mode in 141A and ALE400
    - CQ_ARQ_FAE: CQ call in ARQ FAE (for 141A or ALE400), to connect any Ham.
    - STOP_CQ_ARQ_FAE: Stop of the CQ call in ARQ FAE (for 141A or ALE400) or disconnection.
    - SELECTIVE_CALL_ARQ_FAE: Selective call in ARQ FAE (for 141A or ALE400), to connect a precise Ham.
    - STOP_SELECTIVE_CALL_ARQ_FAE: Stop of the selective call in ARQ FAE (for 141A or ALE400) or disconnection.
    - CALLSIGN_TO_CALL_ARQ_FAE CALLSIGN: Ham callsign of the selective call in ARQ FAE (for 141A or ALE400). This Ham will be, afterwards, called by the command SELECTIVE_CALL_ARQ_FAE,
    - BEACON_ARQ_FAE: starting beacon in ARQ FAE (for 141A or ALE400),
    - STOP_BEACON_ARQ_FAE: stop of the beacon in ARQ FAE (for 141A or ALE400).
    Others
    Each Lentus frequency is transmitted as a comment, for example: "1234.56 Hz". As there are 40 symbols by Lentus frame, 40 frequencies are transmitted.
    - QSO_CALL: call of the callsign located in the "Call" QSO field".

    4) Improvements:
    - addition of the latitude/longitude in "Personal data" ("Configuration menu)
    - addition of the two macros "LATITUDE" and "LONGITUDE" (taking information from the latitude/longitude in personal data)- in SdR, addition of modulation/demodulation in AM and FM (narrow band one for Ham, not wide band one) which can be used to demodulate and then decode ACARS, PACKET, 1382, NWR with a Funcube as shown below.
    About
    the use of AM and FM demodulation and decoding, using the FunCube Dongle:

    using the FCHid program, from the defauts adjustments, change the "IF gain 5" and the "IF gain 6" from "+3dB" to "+15 dB" so to have a sufficient AF level,
    adjust the microphone gain of the Funcube to 100% on the mixer.

    Note: to change the FunCube frequency you can use either the FCid program or the FCD DF program. FCD DF is preferable due to the frequency memories.

    start Multipsk, push "Direct via the sound card" + "+Speaker" of the "I/Q interfaces for SdR transceivers" panel, then push "RX/TX screen". Possibly, push on the "QRGs" button to have some proposed frequencies for the selected mode.
    on the SdR panel, select LSB/USB/AM or FM according to the mode to decode. In all cases, click just on the central frequency of the transmission on the SdR waterfall.

    To test AM: select "ACARS" on the Multipsk mode panel and 131725 KHz (for example) on the FCD DF program.
    To test FM: select "PACKET" on the Multipsk mode panel and 144800 KHz in Europe (144390 KHz in North America) on the FCD DF program. 1382 (in Europe) and NWR (in USA and Canada) modes are also demodulated in FM before decoding.

    5) Miscellaneous
    Note about ALE400 frequency on 80 m
    The area from 3581 to 3582 KHz seems preferably used in North America for QSO.

    The main improvements of MULTIPSK 4.20.1 are the following:

    - Improvement of the 110 A mode: possibility to synchronize decoding on data, addition of the 1200 bps speed in transmission and reduction of the transmission delay,

    - Improvement of the MT63 mode: increase of the sensitivity and frequency equalization,

    - Several updates and bug corrections in GMDSS and HFDL.

    For information, the programs of Mike Simpson, in TCP/IP interface with Multipsk, are now the following:

    * HFDL-display on http://www.rstools.info/downloads/HFDLDisplay.zip

    * ACARS-display on http://www.rstools.info/downloads/ACARS.zip

    * GMDSS-display on http://www.rstools.info/GMDSS.html

    The main modifications of MULTIPSK 4.20 are the following:

    1) Decoding of the ARQ-E and ARQ-E3 modes

    Both modes are used in HF for professional transmissions (militar and diplomatic).

    Differents baud rates (46 to 288 bauds) and different shifts can be used. Multipsk can automatically determine the baud rate and the shift.

    The receiver can be in USB (normal choice) or in LSB, the polarity being automatically detected.

    This mode is available for licencied copies, only (otherwise, the decoding is stopped after 5 minutes).

    See specifications below.

    2) Improvements:

    - Addition of a specific ARQ-E baudmeter and improvement of the accuracy of the baudrate and shift measurements of FSK baudmeter, available under the mode button "Analysis" (function only available for licencied copies).

    - Improvement of the ACARS, Packet (FSK), 1382 and 110A decoding.

    - Possibility to connect, via TCP/IP link in local loop ("TCP/IP" button), several client programs (as HFDL_Display) to several occurrences of Multipsk.

    - Addition of an "Automatic Frequency Control" in GMDSS HF (button "AFC").

    - Addition of a sort of "Sounding beacon" in 141A (ALE) and ALE400 (Click "Options", then "30mn" or "1h", then "Additional sounding". Afterwards, start the "Scan").

    - The log book can manage a maximum of 300,000 QSO instead of 100,000,

    - Extension to 40 serial ports (instead of 16).

    ARQ-E / ARQ-E3

    Description :

    ARQ-E and ARQ-E3 modes are similar but differs in the used alphabet.

    Baud rate : 48, 64, 72, 86, 96, 144, 192, 288 in standard but other baud rate can be used.100. Multipsk proposes an automatic detection of the baud rate (through the "Analysis" function). Characters are sent by blocks of 4,5 ou 8, the first ones being sent in normal polarity and the last character in reverse polarity.

    Modulation : FSK two tones ("mark" and "space", "mark" high) with a shift between tones which can be from 85 to 850 Hz. Multipsk proposes an automatic detection of the shift (through the "Analysis" function).

    Reception mode: USB or LSB (the polarity being automatically detected)

    Character set : for ARQ-E, it comes from ITA2 with a first start bit and a final polarity bit (7 bits per character). For ARQ-E3, it is used the CCIR342-3 character set. For both modes, 32 letters or 32 figures, 2 idles and a repetition character are available.

    Shape of pulse : rectangular

    Bandwidth : variable, depends of the baud rate and the shift,

    Demodulation : non coherent

    Synchronization : automatic using the signal for bit synchronization. For the character synchronization, the particular shape of the blocks and the particular content of characters (on 7 bits) are used.

    Correction code: yes via automatic repetition ("RQ" character in first position) and easy detection of an erroneous character due to the particular content of a characters (4 "space" and 3 "mark" bits or parity bit)

    Convolution code: no

    Interleaving : no

    Pmean/Ppeak: 1

    Lowest S/N : depends on the baud rate, for example, about -4 dB at 96 bauds.

    Note: characters are tranlated the best possible way without, by default, displaying repeated characters.

    New release (4.19) of MULTIPSK

    The new release of MultiPSK (4.19) is on my Web site (http://f6cte.free.fr).
    The main mirror site is Earl's, N8KBR: http://www.eqth.info/multipsk/index.html (click on "United States Download Site").
    Another mirror site isTerry's: http://g90swl.co.uk/multipsk/
    Multipsk associated to Clock are freeware programs but with functions submitted to a licence (by user key).


    The main modifications of MULTIPSK 4.19 are the following:


    1) Decoding of the HFDL ("HF ACARS") mode
    The HFDL mode permits automatic transmissions between planes and ground stations, with an exchange of different pieces of information (positions, frequencies...). It is a global service proposed through a worldwide network of HF stations.
    Several speeds (300, 600, 1200 and 1800 bps) and two different interleaving (short of 1.8 sec and long of 4.2 sec) are proposed.
    The receiver should be in USB mode. The bandwidth must extend from 300 to 2600 Hz with a relatively flat frequency response. The central frequency is equal to 1440 Hz

    The soft automatically decodes the speed (300, 600, 1200 or 1800 bps) and the interleaver (short of 1.8 sec or long of 4.2 sec).

    This mode is available for licencied copies, only (otherwise, the decoding is stopped after 5 minutes).
    See specifications further on.

    The HFDL_display utility (freeware) by Mike Simpson displays details of the aircraft heard, current freqs in use...
    * See http://www.rstools.info/Public/HFDLDisplay.jpg for a screenshot,
    * The zip file, with instruction .pdf file and installer, is available at http://www.rstools.info/downloads/HFDLDisplay.zip


    2) Decoding of the IEC 870-5 mode
    The "IEC 870-5" is a professional protocol based on ASCII used by DCF39/DCF49/HGA22 stations in Long Waves for remote control of equipment.
    This mode is only available for licencied copies. Refer to the Multipsk handbook for specifications.

    3) Display of the frequencies relative to the mode in progress
    When the blue button "QRGs" ("Frequencies" in Q code) of the RX/TX screen is pushed, the frequencies specifically used for the digital mode in progress are displayed. It is, afterwards, possible to transfer these frequencies through Commander (DXLAB) to the transceiver.

    4) Improvements:

    - Tracking recording
    This function is useful to monitor the decoding text. In case of odd or interesting decoding, it is easier to record only the 15 or 60 last seconds so to play a short WAV file (available in the "Recording on a .WAV sound file" window on the Configuration" screen). This function is available for licencied copies, only.

    - QSO Export to eQSL
    Several options are proposed in the Logbook window ("Logbook" button), to give the possibility to export a QSO to the eQSL WEB site, while recording a QSO (by pushing on the "QSO->Log" button or on the "DXKeeper" button).

    - SELCAL: each minute, automatic recording of SELCAL received data (button "Auto.").

    - Addition of Olivia-64-2000 and Contestia-64-2000 sub modes (for Mars users).

    - Addition of the SSTV narrow mode MP73-N (MP73-N net on 10132 KHz USB, on saturdays, 1700 to 1900 UTC).

    - Addition of new display options in GMDSS ("Other options GMDSS" menu).

    - Addition of the Start-Stop mode in HELL 80. Multipsk gives the possibility to transmit in Start/Stop mode for QSO with real Hell 80 machines, the goal being to reduce paper use. The reception is still done in synchronous mode.

    Note: Hell 80 QSOs are done on “Start/Stop” mode every Monday morning (11:00 to 12:15 local Western time (UTC+2 in Summer and UTC+1 in Winter)) by the Hell-80 net of Remmelt, PA0RJW on 7050 KHz.
    For a description of the HELL 80 mode, click on"Specifications" on the F6CTE WEB site (thanks to Frank F/N4SPP).
    See also www.hellschreiber.com (thanks to Frank F/N4SPP).

    - Possibily to transmit in 110A in 75, 150, 300 or 600 bps (150 bps and more, for licencied copies only)
    Note: the and must be disabled (extracted) to transmit in 110A.


    5) Possibility to start the speech synthesis (pronunciation of the decoded text in English or French) directly from Multipsk, by clicking on the on the button. Click on the menu to access to the "Options for the speech synthesis"',

    6) Possibility to select one line in the panoramic screen with one click (the line background color switches to yellow).

    7) New TCP/IP commands:
    * BANDWIDTH [AF bandwidth in KHz] (2.5, 3.3 or 4.3): permits to control the AF bandwidth of the AF spectrum or waterfall
    * VERTICAL_POSITION_OF_THE_RX_TX_WINDOW xyz ("xyz" is the vertical position, for example 0 or 600)
    * LOCK [ON or OFF] (ON or OFF of the "Lock" button position (automatic locking on the frequency))
    * ALL_HFDL_PDU_DECODED (All HFDL PDU buttons ("SPDU", "MPDU", "LPDU", "HFNPDU") are pushed )
    * SPEECH [ON or OFF] (ON or OFF of the button (speech synthesis)
    * SPEED_110A (speed "75", "150", "300" or "600" bps), for the 110A in transmission (for licencied copies only)

    Note about translation of Multipsk.exe and Clock .exe: the 4.18.2.1 version of Multipsk/Clock has been completly translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (http://f6cte.free.fr/Translation_files.htm).

    HFDL
    Description:
    Baud rate: 1800.
    Modulation: 8PSK (not differential, the exact phase being determined through known data) with a central frequency of 1440 Hz
    Reception mode: USB
    Shape of pulse: raised cosine
    Bandwidth: about 2.3 KHz (300 to 2600 Hz)
    Demodulation: coherent
    Synchronization: automatic using the known data
    Convolution code: yes. The constraint lenght is equal to 7 bits,
    Interleaving: yes. Two interleavings are proposed: short of 1.8 sec or long of 4.2 sec.
    Lowest S/N: about + 2 dB at 300 bps and more for higher speeds (the signal to noise ratio must be, in general, very good, to be able to decode this mode),
    Each frame contains a prekey (fixed carrier), a synchronization preamble phase where the sub-mode is defined and a data phase where the unknown data is transmitted (mixed with known data to follow the transmission characteristics).
    The transmitted data units are the following:
    * SPDUs ("Squitter Protocol Data Units") are sent regurarly by the ground station to inform aircrafts,
    * MPDUs ("Media access Protocol Data Units") support transmissions between ground station and aircraft, mainly by identifying themselves and by introducing LPDU,
    * LPDUs ("Link Protocol Data Units") mainly manage the protocol between ground station and aircraft (Log on/ Log off/Requests handling...),
    * BDU ("Basic Data Units") are the segments of an HFNPDU,
    * HFNPDUs ("High Frequency Network Protocol Data Units") permit transmission of information (positions, fréquencies, reception performances...).
    An adaptative equalization is required at this speed (1800 bauds)

    The main modifications of MULTIPSK 4.18.2.1 are the following:

    1) Improvement of the 4285 and 110A modes decoding (better equalisation), the decoding of these modes working under licence.

    2) In GMDSS, addition of an automatic search of information about the ship (ship name, call sign and country) fetched from the ITU WEB site: "http://www.itu.int/cgi-bin/htsh/mars/ship_search.sh" ("Auto ITU data" button).

    3) Improvement of the TCP/IP interface between Multipsk and a client program:

    · 3 possible parameters on the Multipsk command line: TCP_IP_ON to switch the TCP/IP interface on, RX_TX_SCREEN to open the RX/TX screen and MINIMIZE to minimize the main Multipsk screen (Multipsk appearing as an icone),

    · Example of use of these new parameters and the TCP/IP commands, with the "PSK10 transceiver" soft which shows how to decode and code PSK10 with a remote application, controlling Multipsk. It is just a simple example, but supplied with Delphi 6 source code (downloadable from my WEB site, with the "Multipsk_Client" program),

    All the TCP/IP functions are now freeware.

    4) addition of manual and automatic (with licence) back-ups of the QSO text in progress (click on the button "QSO" to access to these functions).

    5) possibility to key in CW through the parallel port (click on the button "MODE" then "On // LPT1 port", to access to this function).

    The main modifications of MULTIPSK 4.18.1 are the following:

    1) New macros:

    - : this macro sends the current HF frequency in MHz displayed in the "Freq MHz" QSO field ("7.039 MHz", for example).

    2) Improvements

    ARQ FAE (141A and ALE400) / QSP mails: for the "QSP mails server" possibility to send a mail to one or several addressees, by storing the message to send in his/her mailbox ("To my mailbox" button).
    An updated paper based on snapshots presents this system:

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    http://f6cte.free.fr/QSP_mails_forwarding_easy_with_Multipsk_in_ALE_and_ALE400.doc

    In APRS, SYNOP, ACARS, 1382, NWR, JT65 and GMDSS possibility to display geographical positions on DXATlas,

    Control of the transceiver SdR Softrock I2C ("Softrock" button of the "Transceiver" window): Multipsk proposes the possibility to control the frequency (+ the RX/TX switching) of a Softrock I2C SdR transceiver thanks to the "cmdSR" commands freely proposed by KT6F. See http://sdrbuzz.com/forum/showthread.php?t=141

    The RS ID transmission is forced on detection of a call ("CQ CQ" or "CQ DE") in a "Sequence", for all modes except BPSK31, BPSK63, JT65, CW, PACKET, PAX, DTMF, PACTOR1, RTTY 45, FAX, SSTV, 141A and 110A.

    Possibility to display on a spectrum rather than on a waterfall in SdR reception

    Addition of a 2210 Hz central frequency for GMDSS,

    Possibility of blinking if your call is decoded during reception, in beacon working,

    Possibility of detection of HFDL transmissions but without any decoding (this function is only accessible by clicking on the "MODE" button),

    3) Physical maps

    It is proposed several physical maps to download for APRS, SYNOP, ACARS, 1382, NWR, JT65 and GMDSS: http://f6cte.free.fr/MAPS.ZIP

    The initial map is from Tom Patterson (thanks to him). As the projection was not a Mercator one, the initial map has been transformed into a Mercator map. However the transformation is not perfect but enough precise (except on poles (south and north)).

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Multipsk 4.17 and Clock 1.8.5
    Clock "The radio driven digital clock', bundled with MultiPSK, provides date and time from FRANCE-INTER, DCF 77, HBG, RUGBY, WWVB, WWV, WWVH, CHU, a GPS or Internet.

    Multipsk associated to Clock are freeware programs but with functions submitted to a licence (by user key).

    The main modifications of MULTIPSK 4.17 are the following:

    1) Decoding of the COQUELET modes (8 and 13)

    These modes are used in HF for professional transmissions. 2 sorts of Coquelet exist: the "8 tones" (still used) and the "13 tones" (perhaps still used).

    This mode is available for licencied copies, only (otherwise, the decoding is stopped after 5 minutes).

    See specifications further on.

    2) Interface with PSKReporter

    Principle: the SWL or Ham monitoring transmits received data to a PSKreporter WEB server, either manually or automatically (by Multipsk in direct or panoramic reception). This server gathers reception records of any digital mode activity and then make those records available, in near realtime, to interested parties (typically the amateur who initiates the communication). Stations are located on a world map.

    All text modes can be reported (included JT65, ALE and ALE400 soundings and ARQ FAE calls). However in PACKET/PAX/PAX2, the option (available clicking on the "Options" button) "Only the information on RX and TX frames" must be unchecked to be able to report to PSKReporter. The "Call ID" can also be reported.

    For configuration and help about PSKReporter, click on "PSKReporter" located on the menu top bar.

    3) New macros:

    - <COM:command> permits to send a serial command through the selected main COM port ("Serial port" menu).

    Through this command, it is possible to control such equipment as TNC or DSP. Attention: Multipsk gives the possibility to send a command through the serial port but this one must be determined by the user. See help for details.

    4) Improvements

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Possibility to do a callsign look-up in DXKeeper,

    Slight improvement of the 4285 and 110A decoding and SELCAL display,

    Partial decoding of the CCIR 493-4 Selcall (Australian Selcall) mode. It is an option of the GMDSS DSC mode,

    Timestamp on each line (for versions under licence): a timestamp (<12:03:51> for example), will be added at the beginning of each new line for all text modes (configuration in the "Options" menu of the "RX/TX" screen),

    Possibility to control a TNC (or another exterior equipement) with COM and EXEC macros in 4 phases: TNC initialization, at RX to TX switchover, at TX to RX switchover, at the TNC end of service (configuration in the "Options" menu of the "RX/TX" screen),

    Possibility of QSO recording in a TCP/IP client logbook (configuration in "Your logbook" of the "Configuration" screen and with the "TCP/IP" button of the "RX/TX" screen),

    Digitalk (thanks to Skip KH6TY), through a TCP/IP link with Multipsk, permits to pronounce (in an English way) all the decoded text. It is aimed to blind Hams and SWL (configuration in the "Options" menu of the "RX/TX" screen). The PC must be a XP.

    For blind Hams and SWL, possibility to search transmissions (PSK31, RTTY...) on the waterfall with the "<--" and "-->" keys (configuration in the "Options" menu of the "RX/TX" screen),

    Possibility of pause of the text transmission, by double-clicking on the transmission window (second one), then resumption with a simple-clicking,

    New function "Auto RX" to switch automatically in reception as soon as the transmission buffer is empty (for Hellschreiber mainly, but also for PSK31...),

    Colors for the panoramic (characters and background) can be freely chosen ("Fonts" button),

    Improvement of the selection of the modes detected by RS ID,

    SdR: possibility to transmit in base band and to select one among 12 HF frequencies.

    Note about translation of Multipsk.exe and Clock .exe: the 4.16 version of Multipsk/Clock has been completly translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (http://f6cte.free.fr/Translation_files.htm).

    Coquelet specifications:

    Created by : ACEC in the 1950s years.

    These modes are used in HF for professional transmissions.

    2 sorts of Coquelet exist: the "8 tones" (still used) and the "13 tones" (perhaps still used).

    Baud rate : 13.33 and 26.67 for Coquelet 8, 13.33 and 20 for Coquelet13

    Speed : 66 or 133 wpm for the Coquelet 8, 66 or 100 mpm for the Coquelet13

    Modulation for Coquelet8: MFSK 8 tones. The first tone (one among the 8 tones) defines the bits 3,4 and 5. The second tone (one among the tones 5, 6, 7, 8) defines the bits 1 and 2.

    The idle sequence switches from tone 8 to 1, then from tone 1 to tone 8, etc...

    Modulation for Coquelet13: MFSK 13 tones. The first tone (one among the 8 first tones) defines the bits 3,4 and 5. The second tone (one among the tones 10 to 13) defines the bits 1 and 2.

    The tone 9 is used to idle.

    Reception mode: only one side (USB or LSB), USB is recommended

    Character set : ITA2 (as RTTY)

    Shape of pulse : rectangular

    Space between tones :26.67 in Coquelet8 et 30 Hz in Coquelet13 ,

    Bandwidth : 213 Hz in Coquelet8 and 390 Hz in Coquelet13

    Demodulation : non-coherent,

    Synchronization: automatic on signal

    Correction code: no

    Convolution code: no

    Interleaving : no

    Automatic Frequency Correction: +/- 5 Hz,

    Drift tolerance : between 10 and 20 Hz/mn according to signal-to-noise ratio,

    Pmean/Ppeak: 1

    Lowest S/N : -10 dB for Coquelet8 at 13.33 baud, -7 dB for Coquelet8 at 26.67 baud, -9 dB for Coquelet13 at 13.33 baud, -7 dB for Coquelet13 at 20 baud

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    The main modifications of MULTIPSK 4.16 are the following:

    1) Decoding of the STANAG 4285 mode
    This mode is used in HF for professional transmissions. Unfortunatly, almost all transmissions are encrypted, which limits the interest of this mode
    Several sub modes (75 to 2400 bps) and two different interleaving (short and long) are proposed. All modes are fixed frequency.
    The receiver should be in USB mode. The bandwidth must extend from 300 to 3300 Hz (at -30 dB) with a relatively flat frequency response between 600 and 3000 Hz. The central frequency is, in this case, equal to 1800Hz. It can be selected a 1500 Hz central frequency for Ham receivers.
    It is a first decoding version which is far away to be perfect (the signal must be very good to be decoded).
    See specifications further on.

    2) RS ID, Call ID (Message ID)RS ID
    Due to the extension of the RS ID use, it is proposed a function which allows to select a group of modes for which the user wants a RS ID detection (function available by clicking on " ID ").
    Message ID
    Creation of a Message ID which permits to send small messages of 9 characters maximum which will appear in the waterfall of the other Hams. As it works in background and as it is not related to any specific digital mode, it can be useful, for example, in case of difficulty of doing a QSO.
    Message IDs are not considered as true Call IDs and are not stored (they are only displayed).

    For more information, download:

    http://f6cte.free.fr/The_RS_ID_easy_with_Multipsk.doc

    http://f6cte.free.fr/The_Call_ID_and_Prop_ID_easy_with_Multipsk.doc

    3) New macros:

    - "" transmits all the data about the last QSO done with the Ham which call sign is in the "Call" field. By clicking on "Number?" in the QSO panel, these data also appears,

    - permits to automatically repeat the same sequence until the user decides to switch on reception. It is a useful function for tests.
    This macro must be located at the end of the sequence.

    - permits to execute a Windows command. For example, it
    provides an easy way to look up call on qrz.com:


    http://www.qrz.com/db/>>. Macros which can be directly replaced by a
    text can be integered to the EXEC macro. This macro is reserved for Hams with experience in computers. See help for details.

    4) Improvements of the ARQ FAE mode (in ALE or ALE400) with, mainly, an automatic re-synchronization using the RS ID, the Packet 1200 bauds decoding, the sound card management, the 110A decoding, APRS (Packet, 141A and ALE400). It can be sent a specific icon, for example "Emergency" (in the APRS "Transmission" panel),
    JT65: JT65 beacon transmitting at each minute.

    Note about translation of Multipsk.exe and Clock .exe: the 4.15 version of
    Multipsk/Clock has been completly translated to Spanish by Joachin (EA4ZB),
    from French. The translation file is on my Web site
    (http://f6cte.free.fr/Translation_files.htm).


    4285 specifications:
    Baud rate: 2400.
    Modulation : 8PSK (not differential, the exact phase being determined through known data) with a central frequency of 1800 Hz
    Reception mode: USB
    Character set : different synchronous or asynchronous formats are proposed
    (5 ITA2, 7 bits ASCII or 8 bits (ASCII+ANSI))
    Shape of pulse : raised cosine
    Bandwidth : about 3 KHz (300 to 3300 Hz)
    Demodulation : coherent
    Synchronization : automatic using the known data
    Convolution code: yes. The constraint lenght is equal to 7 bits,
    Interleaving : yes. Two interleavings are proposed: short or long.
    Lowest S/N (on Multipsk): + 5 dB in 75 bps and + 12 dB in 2400 bps (the signal to noise ratio must be, in general, very good, to be able to decode this mode, i.e "excellent" at 2400 bps and "good" at 75 bps).
    Each frame contains a synchronization preamble phase (80 symbols), 4 data
    phases of 32 symbols where the unknown data is transmitted (mixed with 3
    known data phases of 16 symbols to follow the transmission characteristics).

    An adaptative equalization is required at this speed (2400 bauds).

     

    New release (4.12) of MULTIPSK

    The new release of MultiPSK (4.12) is on my Web site (http://f6cte.free.fr).
    The main mirror site is Earl's, N8KBR: http://www.eqth.info/multipsk/index.html (click on "United States Download Site").
    Another mirror site isTerry's: http://g90swl.co.uk/multipsk/

    Multispk associated to Clock are freeware programs but with functions submitted to a licence (by user key).

    The main modifications of MULTIPSK 4.12 are the following:

    1) New Call ID identifier

    This "Call ID" ("Call" for "Call sign") identifier can be, automatically, detected and located. It can be any Call sign or Call sign 6 characters + Locator. The Call ID is always detected at -13 dB (first decodings at -18 dB), so with a sensitivity better than the PSK31 one. The central frequency of the identifier (which is also the central frequency of the transmission), is determined with a precision of +/- 2.7 Hz.

    As soon as this identifier (without any error) is received, Multipsk:

    * display, on the waterfall, the call sign, possibly preceded by "CQ " and possibly
    followed by "Emergency!" (and a short ring) and the Locator,

    * display the call sign (possibly preceded by "CQ ") and the Locator on the waterfall,

    * display the time of reception, the call sign, the Locator and the Signal to Noise ratio in the Call ID reception window,

    * switch on the received frequency (optional),

    * display the position the Locator on a map (optional).

    This identifier is transmitted in 3.3 sec and has a bandwidth of 172 Hz. It is composed of a RS ID (code 153) followed by a sequence of 56 bits of data and 24 bits of CRC.

    It is a free error transmission, i.e in presence of an Call ID, there are two solutions:

    * either the Call ID is not received because the signal is too weak,

    * or it is received and it is correct, the probability of detection of a wrong identifier due to radio noise being almost nil.

    Refer to the "The_Call_ID_easy_with_Multipsk.doc" paper available on my WEB site, to use this function easily (http://f6cte.free.fr/The_Call_ID_easy_with_Multipsk.doc).

    Note: for the programmers of coding/decoding softwares, I propose, on demand, the source in Pascal (Delphi) for the creation and management of the sequence of 56 bits of data and the 24 bits of CRC.

    2) Possibility to immediatly display APRS received position on Google Earth.

    3) The Multipsk client program (demonstration of the Multipsk control through a TCP/IP link - sources and .EXE) is now in version 5: new commands + Call ID / RS ID server comments + some new commands are now non-licencied.

    New release (4.11.1) of MULTIPSK

    The Multidem 2.2.1 version (SSB/CW/digital modulator/demodulator for DSB and SdR transceivers) fixes several bugs.

    The main modifications of MULTIPSK 4.11 are the following:

    1) Decoding of SELCAL

    The SELCAL is an automatic recognition system of a plane, for those crossing oceans (specification: Aircraft Selective Call - ICAO Annex10). It is a four letter code (for example: "AJFQ") identifying the plane. It is used in HF on top of phone communications between pilots and control base.

    See specifications further on.

    Examples of frequencies used:
    North Atlantic and Artic: 4675, 8891, 13291 KHz,
    North Atlantic: 3016, 5598, 5616, 5649, 8825, 8864, 11279 KHz,
    North Pacific: 5628, 10048, 11330 KHz

    This decoding a function submitted to a licence.

    2) In ALE/ALE400, addition of an ARQ FAE beacon.

    With this function, a message (45 characters maximum) is sent regularly (with an interval of time defined by the user), to other Hams. It will be received, for example, the following frame:

    "BCN F6CTE Hello! PSE answer with the "

    Refer to the "The_ARQ_FAE_beacon_easy_with_Multipsk.doc" paper available on my WEB site, to use this function easily.

    3) KISS mode proposed for Packet and for PAX/PAX2

    Moreover, from UIVIEW, it is now possible to send and receive APRS positions through an internal protocol transformation (PAX to/from PACKET) for UI frames. PAX mode being a sensitive mode, from now on, APRS frames can be sent at long distance, with UI-VIEW.

    Refer to the "PAX APRS with UI-VIEW through Multipsk, easy" paper available on my WEB site, to use this function easily.

    4) Addition of an auxiliary sound card (to speaker)

    Mainly for use by the blind Ham and SWL in JT65 and VOICE (to pronunce the decoded characters through this auxiliary sound card).

    5) Possibility to work in a 48 KHz sound card sampling frequency

    As all modern sound cards are 48 KHz included the "on-board" ones, this option can permit to almost eliminate the need of correction (however, an automatic 48KHz sampling speed determination is proposed). Consequently, the program matches more closely to the sound-card.

    This option needs a bit more CPU load than the standard speed (11025 Hz) but much more if the data comes from a SdR. To set it in service, start the option "Determination of the RX and TX sound card sampling frequencies" of the menu "Adjustments".

    6) Decoding of the PD290 SSTV mode (RX only),

    7) The option (under licence) "Ring on reception of a UI or SABM frame" (button "Options") permits to be warned by a half of a second ring on reception of a UI (APRS position, for example) or SABM (connection demand) frame in Packet, Pax and Pax2.

    SELCAL

     

    Description

    Speed : 1 baud, the carriers duration being equal to 1 second,

    Modulation : MFSK. Transmission of 2 different carriers during 1 second (+/-0.25) followed a silence of 0.2 second (+/-0.1) followed by the transmission of 2 different carriers during 1 second (+/-0.25). The 4 carriers are different.

    Receive mode: USB

    Character set : 16 letters: A, B, C, D, E, F, G, H, J, K, L, M, P, Q, R, S. Each frequency of carrier corresponds to a character (for example 312.6 Hz for A and 1479.1 Hz for S)

    Bandwidth : from 312.6 to 1479.1 Hz

    Demodulation : non coherent. The tuning accuracy must be equal or better to 10 Hz.

    Lowest S/N : about - 4 dB

    The main modifications of MULTIPSK 4.13 are the following:

    1) I/Q direct interface via the sound card, for SdR transceivers

    An I/Q demodulator/modulator (RX/TX) is now directly integered to Multipsk. This one permits to receive on a 48, 96 or 192 KHz KHz bandwidth (-96 to 96 KHz) any USB or LSB transmission.

    From the SdR waterfall, the user will select the desired bandwidth which will be transfered to the main waterfall where possible digital transmissions in USB or LSB will be decoded.

    The transmission will be done on the same frequency that the one selected for reception.

    To remotly control this demodulator/modulator, it is added specific TCP/IP SdR commands ("SDR_SPECTRUM ?", "SDR_SF [Sampling Frequency in Hz]" (48000, 96000 or 192000), "SDR_FR [Frequency in Hz]", "SDR_MODE [Mode]" (Mode: "USB" or "LSB"), "SDR_VFO [VFO]" (VFO: "A" or "B")). See "Multipsk client" version 6.

    2) 200 to 3800 Hz panoramics on 36 channels

    The BPSK31/BPSK63/PSKFEC31/CW/RTTY panoramics can, from now, decode from 200 to 3800 Hz instead of 200 to 2500 Hz. This function needs a powerful PC and a screen which height is superior or equal to 768 pixels.

    3) KISS mode through TCP/IP available for Packet and Pax/Pax2.

    The JNOS 2.0 system (from Maiko VE4KLM) can be interfaced, in Packet, to Multipsk working as a digital modem.

    For complete details and instructions, visit the link below :
    http://www.langelaar.net/projects/jnos2/multipsk

    For a presentation of JNOS: http://www.nyc-arecs.org/JNOS_Primer.pdf

     

     

    4New macro to be used, for example, to regularly transmit meteorogical data of your town. For details, see "Macros" in the index of the help manual.

    Have also been added <CLRRX> (Clears RX window) and <CLRTX> (Clears TX window).

    5) Improvements of APRS. Among them:

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    * possibility to export decoded APRS Packet frames (and also PAX/PAX2 frames for long distances APRS transmissions) to one of the many Internet APRS-IS servers (TKS to Pete AE5PL),

    * possibility to decode positions coming from the APRS-IS server and, then, to display them on the map,

    * the APRS messages acknowledgment is now managed.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Hint: on the map, the red dot is your position, bluedots are positions coming from the APRS-IS server, black dots are decoded positions from HF or VHF.

    6) Transmission of an acoustic message inside a digital QSO

    It is permitted to switch from the digimode to the "Filters" DSP mode (to transmit an acoustic message) using the combination of keys ( and ) or the key.

    Note: this function must be only used in the HF frequencies where digital QSOs and phone QSOs are both authorized.

    New release (4.14) of MULTIPSK

    The main modifications of MULTIPSK 4.14 are the following:

    1) Coding/Decoding of Packet BPSK1200 and new modes Packet BPSK250 and BPSK63

     

    The BPSK1200 Packet mode is used for satellite (as LUSAT LO-19 for example) transmissions in UHF (USB). But it could also be used in VHF (FM ) with a better performance than Packet FSK, in Unproto (APRS) or in connected mode.

    The BPSK250 and BPSK63 Packet modes are experimental and could be used favourably for APRS transmissions in HF.

    See specifications further on.

    2) Addition of the "Prop ID" in the "Call ID" + Scanning
    The "Prop ID" ("Propagation ID") is composed of a 6 characters call sign, a Locator on 4 characters "+" (precision: +/-0.5 ° in longitude and in latitude), the power level (0.5 to 500 Watts), the type of the antenna or its gain (4 to 19 dB) and the directivity of the antenna ("NW" for "North West" for example).

    The "Prop ID" could be processed to determine the real propagation conditions, but the main use is to define the station.

    The Prop ID can be favourably used with the new "scanning" function. This function (in the "Transceiver" window) permits to scan the M1 to M4 memories (frequencies), monitoring a determined time on each channel between 10 seconds to 30 minutes,

    For a quick guide to use Call ID or Prop ID, download

    http://f6cte.free.fr/The_Call_ID_and_Prop_ID_easy_with_Multipsk.doc

    3) Detection of RS ID or Call ID on a SdR

    From the Multipsk SdR window ("Direct via the sound card" button), it is proposed to detect any RS ID, Call ID (or Prop ID) on a 44 KHz bandwidth (between the yellow vertical dashes) and to display the RS ID or the Call ID in the SdR spectrum.

    For example, with a SdR receiver tuned to a central frequency of 14.091 MHz, it will be possible to detect any RS ID or Call ID on all the 14 MHz digital band, i.e. from 14.070 to 14.112 MHz.

    For a quick guide to use RS ID, Call ID or Prop ID, download:

    http://f6cte.free.fr/The_RS_ID_easy_with_Multipsk.doc

    http://f6cte.free.fr/The_Call_ID_and_Prop_ID_easy_with_Multipsk.doc

    Note for programmers: code sources of RS ID and Call ID, in Pascal, are available on demand to the author.

    4) Possibility to control the transceiver through a TCP/IP link

     

    In the "Transceiver" window, it is proposed the possibility to control the transceiver through a TCP/IP link instead of a DDE link (through Commander or HRD). In this case, it must be, previously, established the standard TCP/IP link used for exchange of data with the "TCP/IP client" program, located on the same PC (or on an other PC).

    The last version of the software DXBuddy from Wolfgang (DL7NB) is able to use this interface.

    See http://www.dx-buddy.net

    5) Possibility to automatically display the received Locators on Googleearth maps
    This applies to the standard decoding and to all panoramics (PSK/CW/RTTY). In this case, all Locators received on a 3 KHz bandwidth will be displayed on GoogleEarth. This option is available on the controls part of the world map (button "World").

    6) ALE (141A)

     

    Thanks to the ALE^Stat software (K4PWO, Perry) , it is possible, through a specific TCP/IP link (local address 127.0.0.1, port 23), to export reports of received ALE frames (Soundings, Calls and AMD messages) to the HFLink WEB page (http://hflink.net/qso/).

    7) Sound through TCP/IP Multidem link

     

    The Multidem TCP/IP link permits now to direct the digital sound received, from the TCP/IP server (Multidem or Gui_serv_Multipsk), through the TCP/IP link, towards the speaker. This function permits to, remotly, decode and listen the radio transmissions.

    8) CW: working in QSK and CW "keyer"

    The "QSK" button permits to work in QSK (reception between transmitted Morse signs), by leaving the decoding on duty during CW transmission.

    The "Keyer" button permits to transform Multipsk in a CW generator (automatic dots and dashes), up to 20 to 30 wpm. The double-lever Morse key must be connected to the PC through the same serial port as the one selected to switch the transceiver.

    This works only if the "Yes without sound, for big PC (by timer)" option is selected in the "MODE" window (click on the red button labeled "MODE").

    See the CW (RX/TX) interface diagram at the address http://f6cte.free.fr/Interface_for_CW.GIF

    9) Addition of the "Very slow" 8-125 Olivia/Contestia/RTTYM modes.

    Note about translation of Multipsk.exe and Clock .exe: the 4.13 version of Multipsk/Clock has been completly translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (http://f6cte.free.fr/Translation_files.htm).

    Description of the PSK Packet 1200:

    The PSK Packet at 1200 bauds shares the same characteristics as the FSK Packet at 1200 bauds, except some ones:

    * the modulation is a DBPSK one (differential binary phase shift keying), as, for example, in PSK31. DBPSK is better that FSK,

    * bandwidth : about 2000 Hz

    * Pmean/Ppeak: 0.79

    * the lowest S/N is about +6 dB,

    * very high capacity (up to 40 Hz/sec) to follow a satellite drift (using the Cat system of the transceiver).

    This mode is used for satellite (as LUSAT LO-19 for example) transmissions in UHF (USB). But it could also be used in VHF (FM ) with a better performance than Packet FSK, in Unproto (APRS) or in connected mode.

    Description of the PSK Packet 63 and 250 bauds:

    The modulation is the same as BPSK1200 with a different speed.

    The BPSK Packet at 250 bauds has a bandwidth of about 500 Hz and a lowest S/N of about -2 dB whereas the BPSK Packet at 63 bauds (62.5 in fact) has a bandwidth of about 160 Hz and a lowest S/N of about -8 dB.

     

    New release (4.15) of MULTIPSK

    Multispk associated to Clock are freeware programs but with functions submitted to a licence (by user key).

    The main modifications of MULTIPSK 4.15 are the following:

    1) Decoding of the MIL-STD-188-110A ("110A") + 110A beacon

    This mode (MIL-STD-188-110A/B) is named also FED-STD-1052 or STANAG 4539. It is used mainly by professionals (the text being mostly encrypted) but also, rarely, by Hams.

    The 75 bps sub-mode in TX (beacon) is proposed by Multipsk.
    Several sub modes (75 to 4800 bps) and two different interleaving (short and long) are proposed. All modes are fixed frequency, except a 75 bps (bits per second) sub-mode which is transmitted in "frequency hopping". It is not decoded in this soft.

    The receiver should be in USB mode. The bandwidth must extend from 300 to 3300 Hz (at -30 dB) with a relatively flat frequency response between 600 and 3000 Hz. The central frequency is, in this case, equal to 1800Hz. It can be selected a 1500 Hz central frequency for Ham receivers.

    The soft automatically decodes the speed (75, 150, 600, 1200, 2400 or 4800 bps) and the interleaver (short or long), in different character formats.

    The radio-amateur frequency proposed for this mode is 14104 KHz (adjusted on the transceiver).

    Important: in USA, 110A text transmission is forbidden. PSE, check if it is allowed in your country.

    This mode is available for licencied copies, only (otherwise, the decoding is stopped after 5 minutes). However the 75 bps sub-mode in format 8N1 (RX/TX) is free.

    See specifications further on.

    2) RS ID, Call ID (Prop ID)


    These identifiers are now permanently monitored in background, by default (the CPU load being weak). The management of these identifiers has been improved.

    For Call ID and "Prop ID" ("Propagation ID"), it is proposed four frequencies bandwiths for transmission and monitoring.
    3590, 7040, 10148, 14075 KHz (to adjust on the transceiver).
    All the minimum AF band, i.e. from 200 Hz to 2500 Hz can be used. These frequencies can be favourably scaned ("Transceiver" button).

    http://f6cte.free.fr/The_RS_ID_easy_with_Multipsk.doc

    http://f6cte.free.fr/The_Call_ID_and_Prop_ID_easy_with_Multipsk.doc

    3) Improvements of

    - the SdR mode and frequency management,

    - the ARQ FAE mode (in ALE or ALE400),

    style="font-size: 11pt;">- the JT65, GMDSS and SELCAL modes.

    110A specifications:

    Baud rate: 2400.

    Modulation: 8PSK (not differential, the exact phase being determined through known data) with a central frequency of 1800 Hz

    Reception mode: USB

    Character set: different synchronous or asynchronous formats are proposed (5 ITA2, 7 bits ASCII or 8 bits (ASCII+ANSI))

    Shape of pulse: raised cosine

    Bandwidth: about 3 KHz (300 to 3300 Hz)

    Demodulation: coherent

    Synchronization: automatic using the known data

    Convolution code: except in 4800 bps, yes. The constraint lenght is equal to 7 bits,

    Interleaving: except in 4800 bps, yes. Two interleavings are proposed: short or long. However, it is expected the possibility not to use interleaving.

    Pmean/Ppeak: about 0.76 (specific to Multipsk in TX)

    Lowest S/N (on Multipsk): + 4 dB in 75 bps mode (first decodings at +1.5 dB) and + 10 dB in 2400 bps (the signal to noise ratio must be, in general, very good, to be able to decode this mode, i.e "excellent" at 2400 bps and "good" at 75 bps).

    Each frame contains a synchronization preamble phase where the sub-mode is defined, a data phase where the unknown data is transmitted (mixed with known data to follow the transmission characteristics) , an "End of Message" ("EOM") phase and a final flushing phase (to finish de-interleaving and de-convolution operations).

    An adaptative equalization is required at this speed (2400 bauds).

    Release (4.10) of MULTIPSK

    Multispk associated to Clock are freeware programs but with functions submitted to a licence (by user key).

    The main modifications of Clock 1.8.2 are bugs fixed and extension of the number of com port.

    The main modifications of MULTIDEM 2.2 are the following:

    * possibility to sample at 11025/12000/44100/48000/96000/192000 samples/s

    * possiblity to transmit in USB or LSB:

    - the digital modulations (CW included) coming from Multipsk, through the TCP/IP link,

    - or the signal coming the microphone sound card input (for phone or for CW, thanks to a buzzer (or
    equivalent) handled by the Morse key),

    * the transmission is done as with a transceiver (TX frequency = RX frequency in USB or LSB).

    So this soft can be seen:

    * either as an interface to a SdR or DSB transceiver

    * or a VLF transceiver (the band from 0 to 9 KHz are authorized without licence). See the diagram at the end of this message.

    The main modifications of MULTIPSK 4.10 are the following:

    1) Coding/Decoding of QRSS (slow CW)

    This mode is used for QRP transmissions either in VLF or low bands on HF.

    As CW, QRSS is a digital mode because it can be easily decoded by a computer but it can be also decoded visually by Hams from the signal trace on the waterfall. The human visual decoding is moreover better that the decoding done by the software.

    See specifications further on.

    Frequencies for QRSS: 135.7 to 136.0, 137.6 to 137.8 KHz, 505 KHz + as CW 1810-1838, 3500-3580, 7000-7035, 10100-10140 KHz...

    2) In CW, addition of an AFC (Automatic Frequency Control) to quickly pursuit CW carriers. This function is associated to QRP decoding.

    3) In ALE/ALE400, the sequences 1 to 24, the "UTC" button, the file button and the macros can be used to fill the ALE editors (AMD, DTM/DBM and ARQ FAE).

    4) addition of options in video ID (as the possibility to send two characters per line)

    Note about translation of Multipsk.exe and Clock .exe: the 4.9 version of Multipsk has been completly translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (http://f6cte.free.fr).

    The modification 2 is a function submitted to a licence.

    For information, for all the Multipsk exotic modes (PSKFEC31, PSK10, PSKAM, PSK63F, PSK220F (+DIGISSTV), CCW-FSK, MFSK8, THROBX, DominoF, DominoEX, PAX, CHIP, Voice, Packet 110 bauds...), I propose the QRP frequency: 14075 Khz USB (AF around 1000 Hz), at 17h00 UTC.

    QRSS

     

    Description

    Speed : currently dot of 1, 3 and 10 seconds (or respectively 1.2 , 0.4 and 0.12 wpm) (standard QRSS dot: 3 seconds)

    Modulation : On-Off keying of an audio tone (800 Hz currently) or of a HF simple carrier.

    Receive mode: indifferent (LSB or USB), but prefer USB

    Character set : A..Z 0..9 ? = / + and some others signs more or less used (" Varicode " characters type)

    A carriage return is transformed in space

    Shape of pulse : rectangular

    Bandwidth : from about 10 Hz to less than 1 Hz according to the Morse speed,

    Demodulation : non coherent,

    Automatic Frequency Correction (without noise): +/-5 Hz/mn in QRSS1, +/- 1.6 Hz/mn in QRSS3 and +/-0.5 Hz/mn in QRSS10. In presence of noise, the maximum supportable drift is inferior to these values,

    Pmean/Ppeak: 0.5 but variable

    Lowest S/N : the following values are approximative and depend on the soft (Multipsk) or the visual (by SWL or Ham) decoding:

    QRSS1: soft: -18 dB visual: -22 dB

    QRSS3: soft: -21 dB visual: -26 dB

    QRSS10: soft: -24 dB visual: -28 dB

    The main modifications of MULTIPSK 4.9 are the following:

    1) Decoding of the professional mode DGPS (limited to 5 mn without Multipsk licence)

    Differential Global Positioning System (DGPS) permits to improve the GPS accuracy (down to several meters). It uses a network of fixed ground based reference stations to broadcast the difference between the positions indicated by the satellite systems and the known fixed positions.

    The DGPS stations frequencies are situated between 283.5 and 325 KHz.

    See specifications further on.

    2) Addition of a "Packet repeater" function (limited to 10 mn without Multipsk licence)

    This "Digipeater" function works in 1200, 300 and 110 bauds. The repeater has a presence signalling function (one UI frame " F9XYZ IS READY TO REPEAT ANY PACKET FRAMES" per minute).

    It is reminded that Multipsk has also an APRS repeater in 1200, 300 and 110 bauds.

    3) For ALE/ALE400, addition of ARQ DTM/DBM messages, non limited in length.

    This way to send and receive a message is available on PCAle, MARSAle and several transceivers.

    The DTM or DBM message can be transmitted either in non-ARQ or in ARQ mode. In ARQ (Automatic Repeat Request) mode, there is no error in the transmission of the message. Each frame is transmitted until being acknowledged by the other Ham program. However after 7 retries, the link is considered as broken and the transmission stopped. ARQ DBM is the advised way to send messages.

    Note: the new ALE frequencies are on http://www.hflink.com/channels

    Here are several among the proposed ones: 3596.0, 7040.5, 10145.5, 14109.0, 21116.0 Khz

    4) For ALE/ALE400, in ARQ FAE, the new protocol 1.5 (in my WEB site) will allow the user to establish a fast link and to exchange with another Ham, still in linked state:

    * conversation (chat) error-free messages,

    * mails with ou without files (small compressed pictures, for example),

    * APRS positions, with automatic display on the APRS map on reception.

    5) for ALE/ALE400 in ARQ FAE responder, possibility for the responder to automatically send a pre-defined file. This can permit, for example, by connection to the responder to receive an updated measurements file, the file being transmitted without error.

    6) APRS and SYNOP/SHIP maps: a very easy and quick way to do maps matched to the user's needs is to use the WEB application http://www.sailwx.info/maps/shipplotter.phtml.

    After having prepared the map you want, you have no more that to download the image file (.JPG) and the calibration file (.CLB) in the sub-directory MAPS of the Multipsk directory. Of course the mantissa of both files must be the same (for example: "France.JPG" and "France.CLB"). The CLB files will be recognized and taken into account by Multipsk.

    7) Replacement of the old help system (based on .HLP files) by a new help system based on .CHM files, this to be Windows Vista compatible.

    For the ones interested by APRS, I have written a small English paper called "APRS_easy_with_Multipsk". In this document it will be found 4 snapshots of Multipsk screen with indications to the " how to operate ", and which show the basic functions of APRS in Packet 1200 bauds mode (QRG : 144.800 Mhz in FM).

    Note about translation of Multipsk.exe and Clock .exe: the 4.7 version of Multipsk has been completly translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (http://f6cte.free.fr).

    The modifications 1 and 2 are functions submitted to a licence.

    For information, for all the Multipsk exotic modes (PSKFEC31, PSK10, PSKAM, PSK63F, PSK220F (+DIGISSTV), CCW-FSK, MFSK8, THROBX, DominoF, DominoEX, PAX, CHIP, Voice, Packet 110 bauds...), I propose the QRP frequency: 14075 Khz USB (AF around 1000 Hz), at 17h00 UTC.

    Release (4.8) of MULTIPSK

    Hello to all Ham and SWL,

    The new releases of MULTIPSK (4.8) and Clock (1.8) is on my Web site (http://f6cte.free.fr).
    The main mirror site is Earl's, N8KBR: http://www.eqth.info/multipsk/index.html (click on "United States Download Site").
    Another mirror site isTerry's: http://www.hamshack.co.uk/

    Multispk associated to Clock are freeware programs but with functions submitted to a licence (by user key).

    The main modifications of CLOCK 1.8 are the following:

    1) Time extraction from a RFC868 Internet time server (accuracy: +/- 1 second). In this case, the licence is not required for the PC synchronization.

    2) It is given the possibility to translate, either from English or French, the labels, hints, error or information messages of this soft in any language. The 1.7.7 version of Clock has been translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (http://f6cte.free.fr).

    The main modifications of MULTIPSK 4.8 are the following:

    1) Coding/Decoding of JT65

    This mode is used for QRP transmissions either in HF, VHF or UHF. The JT65A sub-mode is used in HF. JT65 is also used for EME QSO (" Earth - Moon - Earth "), in VHF (or UHF).

    See specifications further on.

    Additional functions are supplied so as to give possibility for blind or partially sighted Hams or SWL to use JT65 (pronunciation either in English or in French).

    Frequencies for JT65A: 1805, 3576, 7076 (USA), 10147, 14076, 18102, 18106, 21076, 24910 Khz

    2) It is given the possibility to translate, either from English or French, the labels, hints, error or information messages of this soft in any language. The 4.7 version of Multipsk has been partially translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (http://f6cte.free.fr).

    3) Improvement of the Acars VHF mode decoding and new functions.

    4) Possibility to display APRS (Packet/Pax/Pax2/ARQ FAE), SYNOP/SHIP and ACARS positions on GoogleEarth map (if present on the PC).

    5) Improvements of the HF Fax mode.

    For information, for all the Multipsk exotic modes (PSKFEC31, PSK10, PSKAM, PSK63F, PSK220F (+DIGISSTV), CCW-FSK, MFSK8, THROBX, DominoF, DominoEX, PAX, CHIP, Voice, Packet 110 bauds...), I propose the QRP frequency: 14075 Khz USB (AF around 1000 Hz), at 17h00 UTC.

    JT65

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Created by: Joseph Taylor (K1JT) in 2004

    Description :

    Baud rate : 2,69 (11025/4096) or 0.372 second by 6 bits symbol

    Messages : a message of 46.8 seconds duration begins at t=1 sec after the beginning of the UTC minute and lasts until t=47.8 sec (it is necessary that the PC may be synchronised on a standard clock). It is composed of 126 symbols, each one with a lenght of 4096 audio samples (0.372 seconde). 63 carry a synchronization tone at 1270,5 Hz. 63 "6 bits symbols" carry the message (allowing the Reed-Solomon coding of 72 bits).
    The 72 bits consist of (non exhaustive):
    * call 1 (28 bits) + call 2 (28 bits) + 4 characters Locator (15 bits) plus the bit 72 to inform that it is a formatted message,
    * call 1 + call 2 (+ prefix or ending, example: F6CTE/P or ON/F6CTE) plus the bit 72 to inform that it is a formatted message,
    * call 1 (+ prefix or suffix, example: F6CTE/P or ON/F6CTE) + call 2 plus the bit 72 to inform that it is a formatted message,
    * CQ + call + 4 characters Locator plus the bit 72 to inform that it is a formatted message,
    * plain text: 13 characters

    Speed : 72 bits (or 13 characters maximum in plain text) by 60 sec period (with only one message by period) or 2,2 wpm

    Modulation : MFSK 65 tones (64 tones for the 6 bits plus a synchronization tone) with a shift between tones of 2.6917 Hz (1x baud rate) in mode A, 5.4 Hz (x2) in mode B, 10.7 Hz (x4) in mode C, except between the synchronization tone (1270.5 Hz) and the first tone of the 6 bits coding (where the shift is equal to 5.4 Hz =2 x baud rate in mode A, 4 x in mode B and 8 x in mode C).

    The tones frequencies are fixed to 1270.5 Hz (synchronization tone) and 1270.5 + 2.6917 (N+2) m Hz with N value between 0 and 63 and m for 1, 2 or 4 for, respectively, the sub-modes A, B, C. The tolerance on the synchronization frequency is +/- 600 Hz.

    The synchronization tone (detected with a better precision than +/- 1.34 Hz and better than 0.19 sec for the time synchronization) is transmitted accordig to a pseudo-random sequence (which gives an auto-correlation function in form of spike arounf the nil delay).

    The minimal signal report "OOO" (meaning "yours signals are readable, at least, some of the time and I have copied both of our callsigns") is transmitted by reversing the pseudo-random sequence, the "1" becoming "0" and reversely.
    The synchronization tone is searched on +/- 600 Hz because the EME QSO can have important frequency drifts (Doppler).

    Receive mode: USB. Each transmitting or receive period of 60 sec must start on a minute + 1 sec with a tolerance on +/-1 sec on the PC clock, the time delay for the EME QSO being about 2.5 seconds (time for a signal to go and return from the moon).

    Characters set : ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+-./?

    Shape of pulse : rectangular

    Bandwidth : 178 Hz in mode A, 355 Hz in mode B, 711 Hz in mode C,

    Synchronization: automatic using the pseudo-random sequence as a reference

    Coding code : Reed Solomon (63, 12) or 63 symbols of 6 bits for 12 symbols of 6 information bits (so a yield of 0.19).

    Convolution code: no

    Interleaving : after the Reed-Solomon coding, the 63 symbols are interleaved (writing line by line on a 7x9 matrix and reading column by column). The final bits are passed through a Gray coding before transmission.

    Pmean/Ppeak : 1

    Drift tolerance : about 30 Hz/mn

    Lowest S/N : for the mode JT65A: -24 dB with the "hard decision" decoder and -26 dB with the "soft decision" decoder KVASD.EXE

    Short messages: it can be also transmitted short messages with 2 tones, the first one is always the synchronization tone (1270.5 Hz) and the second one is a tone at a distance of n x 26,9x m with m=1 in JT65A, m=2 in JT65B, m=4 in JT65C. Each tone is 1.486 second long.
    It can be sent 3 messages: "R0" ("I have copied both calls and my signal report, and your report is 0 (weak signal)"), "RRR" ("QSO is complete, I have no more to say"), "73" ("Best regards, end of contact").
    Possible decoding down to -32 dB, limited to-27 dB by Multipsk to avoid false decodings.

    Note 1: the standard synchronization tone is 1270.5 Hz but it can be different.

    Note 2: the JT65A sub-mode is used in HF. JT65 is also used for EME QSO (" Earth - Moon - Earth "), in VHF and UHF.

    Note 3: general specifications of this mode will be found in the document "The JT65 Communications Protocol - Joe Taylor, K1JT" written in march 9, 2005.

    Release (4.7) of MULTIPSK

    Hello to all Ham and SWL,

    The new release of MULTIPSK (4.7) is in my Web site (http://f6cte.free.fr).
    The main mirror site is Earl's, N8KBR: http://multipsk.eqth.info/index.html (click on "United States Download Site #1").
    Another mirror site isTerry's: http://www.hamshack.co.uk/
    Multispk associated to Clock are freeware programs but with functions submitted to a licence (by user key).

    The main modifications of MULTIPSK 4.7 are the following:
    1) Decoding of ACARS mode in VHF
    The ACARS (Aircraft Communication Addressing and Reporting System) VHF mode is a digital datalink system allowing transmission of small messages between aircraft and ground stations in VHF.
    It is available for licencied copies, only (otherwise, the decoding is stopped after 5 minutes). See specifications further on.

    2) GMDSS DSC: possibility to display ships position on a local map chosen by the user.

    3) Interface with:
    DXView, which locates the exported callsign from Multipsk on a map, gives you geographical information about it and directs your antenna towards this callsign,
    - Pathfinder, which, from the exported callsign from Multipsk, does a search of the callsign, on the chosen database ("QRZ" for example) and gives you the available information about this callsign.
    These softwares belong to the DXLAB suite (from Dave AA6YQ).

    4) ADIF and DXKEEPER export under 2.1.9 ADIF specification
    The submode ("32-1000 Hz" for Olivia, for example) is exported towards DXKEEPER version 6.1.0 minimum (DXLAB).

    5) addition of RTTY 110, 150 and 200 bauds modes in RX only.

    6) ARQ FAE in ALE and ALE400
    - Improvement of the Outlook Express (or equivalent) outgoing mails handling,
    - Automatic transfert of received ARQ FAE messages, to Internet addresses via Outlook Express e-mails (for licencied copies),
    - Possibility to work in "Responder".

    7) button "N" near "Name": it is determined and displayed the number of QSO done with this Ham and the number of QSO done with this Ham and in this mode.

    8) Improvement of the radio mailbox for a easier handling of messages.

    9) Labels printing for the QSOs of the logbook.
    For information, for all the Multipsk exotic modes (PSKFEC31, PSK10, PSKAM, PSK63F, PSK220F (+DIGISSTV), CCW-FSK, MFSK8, THROBX, DominoF, DominoEX, PAX, CHIP, Voice, Packet 110 bauds...), I propose the QRP frequency: 14075 Khz USB (AF around 1000 Hz), at 17h00 UTC.

    ACARS in VHF

    The ACARS (Aircraft Communication Addressing and Reporting System) VHF mode is a digital datalink system allowing transmission of small messages between aircraft and ground stations via radio (VHF).

    Description :

    Baud rate : 2400.

    Modulation : MSK two tones (" mark " and " space ") with a shift between tones of 1200 Hz

    (fixed tones at 1200 and 2400 Hz)

    Reception mode: AM

    Character set : ASCII characters (7 bits) + a final parity bit

    Shape of pulse : rectangular

    Bandwidth : about 3 KHz

    Demodulation : non coherent

    Synchronization : automatic using the signal

    Detection code : yes on 16 bits.

    Interleaving : no

    Pmean/Ppeak : 1

    According to the ARINC 618 specification, each frame contains:

    * a pre-key of 128 bits at "1" (2400 Hz carrier for 0.05 second)

    * Bit synchronization. 2 characters "+" and "*" to synchronize at bit level,

    * Character synchronization: 2 characters SYN (CHR(22)) to synchronize at character level,

    * ACARS start of transmission: character SOH (CHR(1)),

    * Mode: a character for the type of transmission with the ground stations ("2", "@", "A" to "Z", "[", "\", "]"),

    * Address: aircraft registration number. This number corresponds either to an aircraft type and an airline company or to a flight identifier (airline on 2 characters and number on 4 alphanumeric characters),

    * Acknowledgement: a character 0-9, a-z or A-Z for pour the acknowledgement and the NAK (CHR(21)) character to refuse the acknowledgement,

    * label: two characters to designate the type of message,

    * Block identifier: on one character 0-9, a-z or A-Z

    * End of preamble: character STX (CHR(2)),

    * Text: message (optional). The (variable) maximal size is 220 characters,

    * Suffix: character ETX (CHR(3)) indicating the end of the message,

    * BCS (Block Check Sequence): control code of the frame on 2 characters,

    * BCS suffix: character DEL (CHR(127)).

    Note 1: Multipsk decodes neither the PSK Acars in VHF nor the HF Acars.
    Note 2: Multipsk can fix two single errors.

     

    Release (4.6) of MULTIPSK
    Multispk associated to Clock are freeware programs but with functions submitted to a licence (by user key).
    The main modifications of MULTIPSK 4.6 are the following:
    1) Decoding/coding of the BPSK250/QPSK250 modes.
    The BPSK250 and QPSK250 modes derive from BPSK31/QPSK31 but they are eigh times faster. See specifications further on.

    2) ALE and ALE400: transmission of small DTM et DBM messages.

    3) Frequencemeter function
    This frequencemeter, integered to the "Spectrum" function, measures the frequency of respectively the left input signal and the right input signal, up to about 20 Khz (only the licencied copies).

     

    4) Fax HF: possibility to modify the shift, from 700 to 1200 Hz.

    Description :

    Baud rate : 250

    Speed : 296 wpm in capital letters and 408 wpm in small letters (average)

    Bandwidth : about 500 Hz,

    Lowest S/N : -2 dB

    For the remainder, the characteristics are identical to the ones of BPSK31/QPSK31 modes.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Release (4.5) of MULTIPSK

    The new release of MULTIPSK (4.5), CLOCK (1.7.6) and MULTIDEM (2.1.1) are in my Web site (http://f6cte.free.fr).

    The main mirror site is Earl's, N8KBR: http://multipsk.eqth.info/index.html (click on "United States").
    Another mirror site isTerry's: http://www.hamshack.co.uk/
    Multispk associated to Clock are freeware programs but with functions submitted to a licence (by user key).

    CLOCK 1.7.6 has now a possibility to directly interface a SdR receiver through the sound card.

    MULTIDEM 2.1.1 fixes bugs.
    The main modifications of MULTIPSK 4.5 are the following:
    1) Decoding/coding of the DTMF (Dual-tone multi-frequency) mode.
    This mode is used for telephone (to dial the phone number) but also in VHF and UHF for different uses as, for example, activation of repeaters by radio. It could be used in HF, for radio control of Ham equipments.
    Fonctions of DTMF handling on reception are available for licencied copies, only. See specifications further on.

    2) New ALE400 mode (ALE in a 400 Hz bandwidth)
    This ALE system has exactly the same functions as the ones of the "141A" of Multipsk except that:
    * the bandwidth is 400 Hz instead of 2000 Hz as in standard ALE (so ALE400 can be transmitted anywhere where 500 Hz digital modes are authorized),
    * the modulation speed is 50 bauds instead of 125 bauds and consequently the text throughput are 2.5 slower,
    * no fix frequency (as in MFSK16...), the automatic tuning being able to be done thanks to the RS/ID transmission,
    * the signal to noise ratio is 5 dB better:

    - 9 dB for sounding, AMD messages and Unproto mode,
    - 11.5 dB (- 13.5 dB with many repetitions) for ARQ FAE.

    For ARQ FAE, it has been added a compression system using a modified IZ8BLY (Nino) MFSK Varicode.
    So the ALE400 text throughput is typically 60 wpm (up to 107 wpm in bilateral and 63 characters frames). ARQ FAE covers all ASCII and ANSI characters (8 bits)

    There is a Word document which goal is to show from Multipsk snapshots how to do the basic operations in ALE and ALE400. This document (1.1 Mo) is available from my site site "http://f6cte.free.fr/ALE_and_ALE400_easy_with_Multipsk.doc" (copy and paste this adress in Internet Explorer (or equivalent) Net adress field). Look also at "http://hflink.com/ale400/" which is a specific page for ALE400, with a lot of information.

    ALE400 frequencies: 1837.0, 3589.0, 7037.5, 10141.5, 14074.0, 14094.0, 18104.5, 21094.0, 24926.0, 28146.0, 50162.5, 144162.5 (AF at 1625 Hz).

    3) Direct SdR interface through the sound card

    It is the best way to do as there is no additional transmission delay. It allows the working in all digital modes.
    The modulation and demodulation operations of the I/Q signals coming from the sound card are directly done by Multipsk (which plays the role of a SdR program). The bandwidth considered is the USB side, in base band. So there is neither frequency shift nor consideration of the LSB side. After selection, the working is transparent for the user.

    4) Rewind function

    This function makes you able to decode the signal from a point in time located before you click on the waterfall. It is permitted to select a rewind duration from 5 seconds to 3 minutes (from 20 seconds to 3 minutes for only the licencied copies). Powerful computers can take profit of this function, decoding of the rewind period being quick.

    DTMF

    Description :

    Duration of the symbol: variable, in general between 40 to 100 ms for the carrier and 20 to 60 ms for the silence which follows the carrier. In Multipsk, the carrier is 60 ms long and the silence 40 ms long (100 ms for the whole character).
    Note: to a symbol (of 4 bits) corresponds a character.

    Modulation : MFSK, two groups of 4 tones with 2 tones send in the same time (which give 16 possibilities)

    Reception mode: FM in VHF, otherwise USB is recommended in HF

    Character set : 0..9 * # A B C D

    Shape of pulse : rectangular

    Tone frequencies: 1st group: 697, 770, 852, 941 Hz and 2nd group: 1209, 1336, 1477, 1633 Hz
    For example: "1" is composed of the tone 697 Hz and the tone 1209 Hz

    Bandwidth : about 1000 Hz

    Demodulation : non-coherent,

    Correction code : no

    Convolution code: no

    Interleaving : no

    Automatic Frequency Correction: no (frequencies are fixed),

    Pmean/Ppeak : 1 (about 0.5 if the necessary silences between characters are integered)

    Lowest S/N : about 2.5 dB (to avoid false detections)

    In Multipsk, a DTMF code is supposed finished after 2 seconds of silence.

    It is added a specific character which is the carriage return / linefeed. This one adds 2 seconds of silence. This permits to finish the sequence of DTMF characters which constitutes a definite code. This character is not useful for only one code but can is useful to separate different codes as, for example:

    123

    345

    678

    .....

    DTMF (FM in VHF and UHF and USB in HF)

    1) In FM, on the repeaters frequencies (144,500 to 144,794 KHz and 145,194 to 145.593 Khz).
    For example in France: "http://f5ad.free.fr/ATV-RES_%20Tableau_des_frequences.htm"

    2) In USB (HF), anywhere but on the frequencies reserved to digital modes (bandwidth >= 1 KHz).
    Important: as DTMF frequencies are fixed, the chosen frequency will be a multiple of 2 KHz, as for example: 14102, 14104, 14106 KHz... on 20 meters.

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