To: | <ct-user@contesting.com> |
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Subject: | [ct-user] Auto Mic switching |
From: | kk9a@arrl.net (kk9a@arrl.net) |
Date: | Fri, 10 May 2002 21:39:37 -0500 |
I would like to switch a microphone/keyer relay through my parallel port when operating SO2R. In other words, when I'm logging on radio 1, I'd like the mic on radio 1 and when I switch, using alt "." , to radio 2 I'd like the mic to also switch automatically. In searching through the archives I found that pin 16 of LPT1 or LPT2 is used for radio switching. Does someone have a simple sketch of a circuit that I can use to build an autoswitching device? 73, John |
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