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[aprssig] VOX to key up soundmodem?

Glenn Wiebe gswiebe at mb.sympatico.ca
Wed Apr 13 15:56:54 UTC 2005


A few years ago when I tried PSK I constructed a radio to sound card interface 
using two Radio Shack transformers to go between my TS-440S and the pc. Whenever 
I operated PSK I simply turned the VOX on and it worked fb. Of course my 
microphone was not plugged in. I really am not crazy about using vox though, who 
knows what the squeaks and squawks from the pc will be transmitted. And then 
there is the matter of forgetting to turn the vox off when you're finished.

73 de Glenn...VE4GN

Jason Winningham wrote:

> A new ham brought up an interesting question: can a VOX circuit be used 
> to key up the TX on a soundmodem rig, to avoid wiring another port from 
> the computer?
> 
> -Jason
> kg4wsv





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