Serial Port PTT application

ALL TECHNICAL INFORMATION AND SOFTWARE ON THIS PAGE IS USED ON YOUR OWN RISK!!!
YOU HAVE BEEN WARNED. LIVE WITH IT…

Development of this software has been discontinued.
Source code now available further down.


Serial Port PTT software

I have bodged together a simple control software for setting RTS/DTR on a serial port of your choice. It is freeware and source code is available
on this page. It was made using Visual Basic 2008 Express.

It can probably be used for any RS232 PTT interfaces for any radio but I created it for a specific purpose:

The Kenwoood TS-2000 has by design 2 PTT lines. Both are available in the ACC port and they enable you to choose
if you want the radio to transmit from the audio input in the back ACC input or from the front mic socket.
This TS-2000 feature is a WONDERFUL idea as you can connect a computer interface on the back and use it without the need
to reduce gain or remove the front microphone when working digital modes.

The implementation of the Dual PTT function has a big flaw though. Only the “Front” PTT is accessible via CAT commands, so
you NEED an additional dedicated PTT serial port if you simultaneously want to use CAT control with digital modes.
Most Digital Mode software can handle this (MixW etc.)

But… to Remote Control the rig for SSB or FM I prefer to use the nice big controls on HRD or Kenwood ARCP-2000.
Unfortunately these only allow PTT via the CAT command that selects the front mic!
These can be run over VNC or Remote Desktop and Skype can be used for the voice through any digimode interface.
My SerialPTT application can be used in combination with these to press the correct PTT for the ACC audio input.

The SerialPTT application does NOT steal and lock the COM port when not pressed so you can leave it running whenever you like.
Bugs are included at no extra cost.

Download: Plain EXE file

Download: SerialPTT-src

6 Replies to “Serial Port PTT application”

  1. hi… im working on a cat and serial control app for a vertex 1700 and i need to implement your source code in my soft. its just for lab experiences so i wont leave the university.

    thank you

    Nicolas
    LU8DNC

  2. hi, it be possible to get a copy of the source code? i wonder if possible to assign a ptt hot key . thank you so much

    dorel

  3. Hello and 73!

    Thank you very much for sharing this simple but effective ptt app.

    Could you please be kind enough to share the source code? I will do my best to assign a key from the keyboard, will share the code with you.

    Cheers!

    Luis

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