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MultiPSK 4.30alt


Clock 1.10.2


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
    • 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


The main improvements of MULTIPSK 4.30 are the following:

1) New mode ATIS (RX)

ATIS (Automatic Transmitter Identification System) is used by ships for identifying themselves by their call sign (or by their MMSI for visiting ships), on inland waterways (as the Rhine) of the "RAINWAT" area (a part of continental Europe). It is transmitted a short frame (285 ms) sent just after the operator has finished talking and releases his "PTT" ("Push To Talk") button of his FM VHF radio-telephone. It is similar to the VHF GMDSS mode, but only the ATIS code is transmitted (no position and no message). For more information about ATIS, look at

The radio-telephone frequencies on inland waterways are located on channels spaced by 25 KHz between 156.025 and 161.950 MHz (for example: 160.800 MHz for the Amsterdam port station (channel 04)).

2) Others

·                     An "AFC" (Automatic Frequency Control) function is available in VDL2 mode, if Multipsk is directly interfaced with the SdR.

·                     Improvement of the GMDSS VHF decoding.

·                     Addition of the Olivia 32-2K sub-mode.

New release (4.29.2) of MULTIPSK

The new release of MultiPSK (4.29.2) and Clock (1.10.2) are on my Web site (

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

The main improvements of MULTIPSK 4.29.2 are the following:

· In AUTEX mode, all received and transmitted messages are displayed in a "SMS" form in a specific window. Positions (by Locator or latitude/longitude) can be transmitted and displayed. It is also possible to exchange small files (<=10Kb).

· In 4285 mode, the "Inversion" button permits to invert the bits polarity. For example, an Italian station (from Naples) transmits, sometimes, in 600 Long / 5N1 / Inverted on 8123.2 KHz. The "Auto" button permits to automatically detect the bits polarity.

· For RTL/SDR keys, it is proposed, thanks to the "RTL and mode selection" button, to select the direct sampling of the I branch: this experimental mode permits, after key modification (see, to receive between 0 and 14.4 MHz (HF frequencies). However, the modification is difficult because components are tiny. Moreover, the key sensitivity is very bad.



The main improvements of MULTIPSK 4.29.1 are the following:

· New message mode in all ARQ modes

The "Message mode" button, in pushed position, allows the user, for all "ARQ" modes (Packet FSK110-300-1200 bauds/Packet PSK31-63-250-1200 bauds, PAX, PAX2, 141A(ALE), ALE400, AUTEX 2, 4, 7,13) to prepare the message and then to send it when it is ready. The transmission is done with the "Send" button or with the key.

If not in "message mode", the message is sent as and when it is written (previous way to do). In "message mode", the "Transmission on " option is ignored.

Display of the GMDSS coast stations positions on maps.

Update of the Shipdata.txt file and display of the ship type, if known, in GMDSS and AIS.

The "CPU" button (at the top of the RX/TX screen) gives the number of cores of the CPU, followed by the CPU theoretical speed and the volume of data (RX/TX). It allows the activation of the CPU and memory measurements of the PC.

New macro (for "Alignment on an AF frequency") allows an action equivalent to push on the "Align" button of the "Transceiver" form.

Volume of data received or transmitted limited to 60 Mb with automatic back-up beyong 60 Mb.

Note about translation of Multipsk.exe and Clock .exe: the 4.29 version of Multipsk has been completly translated to Spanish by Joachin (EA4ZB), from French. The translation file is on my Web site (


To install the programs on your hard disk:

1) Download "MULTIPSK_setup.exe" from the F6CTE WEB site

( The links are:

* "To download the last version of Multipsk and Clock, click here" or

* "Download Here".

Afterwards click on "Run" (or "Execute") (rather that to store it).

ATTENTION: the Windows firewall perhaps will block this file. You will have to unblock it.

NOTE: as there is no change in the Windows registers base (and so no problem of uninstallation), the application files could be installed manually (with Windows Explorer) in any directory.

2) During the execution:

* the setup program (based on a "Inno Setup" script) will ask to confirm the

detected language ("English"). The other proposed language is French,

* by default, the user will confirm the proposed options,

Note: your configuration files will not be modified, because they will be

automatically created, only in case of absence.

* if the installation directory yet exists, the setup program could ask confirmation

of this directory. You will answer "Yes", except a particular user need.

Note: if you are installing the program for the first time, confirm "C:\MULTIPSK".

If you are updating any previous version, give the yet used directory name.

Two links on MULTIPSK and CLOCK will be automatically created on the desktop as well as a "Multipsk" group in the menu.

Start the MULTIPSK program either with the "MULTIPSK" link or from the menu. The configuration screen opens first. You must click the RX/TX button to access the main screen.

IMPORTANT: Clock must be started as administrator to be able to update the PC time. For this, just right-click on the Clock.exe file, select "Properties" and choose the "Compatibility properties" or "Advanced properties". Check on "Run as administrator" (Level privilege).

The help file can be started from MULTIPSK, or by double-clicking on "HELP_PSK.CHM". For help on CLOCK, click "HELP_CLO.CHM".

In case of error message such as "Action cancelled" or "DNS error", to unblock the blocked CHM file:

* In Windows Explorer, right-click the blocked file, and then click Properties.

* In the General tab, click Unblock.

Hints and contextual help:

* many buttons have a hint which is obtained by remaining a fraction of second

with the mouse pointed on the button,

* a contextual help (i.e. depending on the selected mode) is obtained by clicking

with the right button of the mouse, the cursor of this one being located over

a mode button ("BPSK31", for example).

Multipsk is conceived for a Windows system.

Note for the LINUX users (under WINE):

The DLLs are not recognized under Linux. Multipsk uses few DLLs, and only for auxiliary functions which are:

* the RTL/SDR interface for SdR receivers,

* PC identification,

* the parallel port handling,

* PSK-reporter,

* option "DirectSound" for the pseudo-modes "Filters" and "Binaural".

To avoid an error message, select the last option of the menu.


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