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MultiPSK 4.29alt


Clock 1.10.1


Multidem 2.5.1

The main improvements of MULTIPSK 4.29 are the following:



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
    • EPIRB-ELT-PLB beacons
    • ARGOS (beacons/satellites)
    • AUTEX
  • 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"
    • 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
    • DominoF / DominoEX / THOR
    • PAX / PAX2
    • Automatic Link Establishment (see MIL-STD-188-141A+
      ARQ FAE / ALE400 + ARQ FAE
    • JT65 (A B and C)
    • LENTUS
  • 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)
  • PPM (by positioned pulses) modes: mode S (ADS-B included)
  • 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


1) New mode AUTEX (RX/TX) for meetings in digital

The AUTEX modes permit to organize a meeting between 2, 4, 7 or 13 people maximum. Text messages can be transmitted from any person to any other person participating to the meeting, in pseudo full duplex (protocol one, not physical one), each person being sure that his messages will be read by the other participants. So, each one will be sure to read all the texts sending by the other participants to the meeting. It is a mode without errors (if en error is detected, the frame is re-transmitted until complete reception). So, it can be considered as an extended ARQ mode.

The proposed set of characters permits to exchange in all ASCII-ANSI languages (English, French, German, Russian...), but not those with ideograms (as Japanese).

See general specifications further on.

2) Others:

· Improvement of the editor of text to transmit (except for "frames" modes as Packet, ALE, AUTEX...). Addition of a the button with a "Undo" icon used to undo the last operation on the transmission editor: for example, to erase a macro or a sequence loaded by error in the editor. It can also be done with the combination of two keys .

· Addition of a 100 Hz bandwidth for RS ID detection ("ID" button at the top of the RX/TX screen).

· Frequency limited to 4,16 GHZ instead of 1 GHz ("Tranceiver" button at the top of the RX/TX screen).

· Improvement of the ACARS positions determination and addition of new controls ("0" and "No Downlink" buttons)

· Possibility of ring on 3 sec in SELCAL.

· Possibility to handle 96 sound cards in input instead of 24 and 48 sound cards in output instead of 16.

· Use of the keys combination "Shift+left or right arrow" to change AF frequency by 5 Hz step (instead of the "Left or right arrow" key alone).

· In CW, use of the keys combination"Left Alt" + "Up or down arrow" to change the CW TX speed (between 10 and 52 wpm).

· Slight modification of the Multipsk GUI (interface), with the approximative norm (this to spare time):
* buttons on fuchsia color for help,
* buttons on yellow color for important actions,
* buttons on green color for exit,
* buttons on orange color for a set of buttons handling the same topic,
* buttons on grey color for configuration or not important actions.

· For the pieces of information about the coast stations, displayed when decoding GMDSS, addition of the GMDSS_MMSI_coast_stations.txt file in the Multipsk package to make possible personal modifications.

The list of WEB sites associated with the "Traffic" window is:







The list of programs controling Multipsk through a TCP/IP link is:

· APRS-SCS version 1.29 (John KB2SCS)

· DX-BUDDY (Wolfgang, DL7NB)

· JNOS (Maiko VE4KLM) on

· HFDL-display, ACARS-display, GMDSS-display, VDL2-display by Mike Simpson on

· PlanePlotter (for VDL2) on

· BPQ32 by John Wiseman (G8BPQ) on WEB address:
Look example on

· Multipsk_client (software availlable (source and .EXE) on the author's site:

· PSK10_transceiver (software availlable (source and .EXE) on the author's site:


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