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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TRLog\]\s+ptt\/cw\s+keying\/dvk\s+trigger\s*$/: 3 ]

Total 3 documents matching your query.

1. [TRLog] ptt/cw keying/dvk trigger (score: 1): Author: k6ll@juno.com (k6ll@juno.com); Date: Mon, 21 Jun 1999 11:24:59 -0600; I'm going to build an interface box today for ptt, cw keying, and dvk triggers. I see that Tree recommends relays for the first two. Are these 5vdc or 12 vdc? I guess I could get in there with a volt; /archives//html/TRLog/1999-06/msg00082.html (7,594 bytes)
2. [TRLog] ptt/cw keying/dvk trigger (score: 1): Author: n6tr@teleport.com (n6tr@teleport.com); Date: 21 Jun 1999 18:37:43 -0000; It doesn't matter. I use 12 volt relays - but what you need to do is buffer the printer port output and then turn on a transistor to sink the current on the other side of the relay coil. The 850 doe; /archives//html/TRLog/1999-06/msg00083.html (7,704 bytes)
3. [TRLog] ptt/cw keying/dvk trigger (score: 1): Author: rrossi@btv.ibm.com (Ron D. Rossi); Date: Mon, 21 Jun 1999 17:16:45 -0400; FWIW I dug into the schematics a bit to see if there was a way to get the DRU-2 to feed into the data input instead of the mic input. If you gnd the PKS input (packet stand-by line) the mic is muted; /archives//html/TRLog/1999-06/msg00084.html (7,646 bytes)

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