Hello Ray,

Thanks for this very informative response to my question.  As it turns out I 
already had installed vCOM but I just didn't know how to use it so it was 
just sitting there....  So after yours and Kirks emails it took me all of 2 
seconds to get my Flex keying up in PSK31....

Thank you very much, Dennis, k0eoo


----- Original Message ----- 
From: "Ray, K9DUR" <[EMAIL PROTECTED]>
To: "'Dennis Petrich'" <[EMAIL PROTECTED]>; <[email protected]>
Sent: Saturday, July 05, 2008 12:48 PM
Subject: RE: [Flexradio] How to PTT in Digital modes?


> Dennis,
>
> Most sound card interfaces have a connection to a serial port for PTT
> control using the DTR and/or RTS handshaking lines to key the rig.  In the
> SDR world, we use a virtual serial port program like K8VB's vCOM (it is
> free) to set up a pair of virtual serial ports.  Point the digital mode
> program at one of the ports of the pair, point PowerSDR to the other, & 
> like
> magic, you are keying the rig with no wires!
>
> So, to use digital modes with PowerSDR, you need 2 separate 3rd-party
> programs to make it work in addition to yoiur didgtal mode program &
> PowerSDR:  1.)  you need VAC to pipe the audio between the digital mode
> program & PowerSDR, & 2.)  you need vCOM (or another virtual serial port
> program) for PTT control.
>
> 73, Ray, K9DUR
>
>
>
>
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