[nos-bbs] UDP remote control RTS based PTT

[Boudewijn (Bob) Tenty]

Why this indirect way? Is this because of the software processing delay of the VARA modem?

Bob VE3TOK

On 2021-01-29 00:28, M Langelaar wrote:
> For anyone with the junk box RTS optoisolator PTT circuit :
>
> Very rundamentary, experimental, works for me. I have quickly updated
> the documentation, it will need more work, but it's a start, a summary :
>
> 1) install Strawberry PERL on your Windows PC
>
> 2) run a perl based UDP listener on your Windows PC
>
> 3) it respond to "PTT ON" and "PTT OFF" commands on UDP port 8400,
>     raising and lowering RTS on COM1 on the Windows PC itself.
>
> 4) xNOS now supports taking the PTT ON and OFF status information
>     it gets from the VARA software modem and sending it to this listener,
>     so if you have a cheap RTS line PTT (optoisolator) and a serial port,
>     then this is how you can trigger your rig.
>
> I have NOT taken into consideration TX delay and related stuff (yet). The
> VARA software is new to me. This is just something I slapped together,
> since I needed a way to do PTT, and I can't justify to the wife having to
> buy yet another interface board or box, yup ...
>
> Maiko / VE4KLM
>
>
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