| To: | "Dave Hachadorian" <K6LL@ARRL.net>, "cq-contest reflector" <cq-contest@contesting.com> |
|---|---|
| Subject: | [CQ-Contest] Optocouplers |
| From: | Mark - K5AM <k5am@zianet.com> |
| Date: | Sat, 04 Jul 2009 19:05:57 +0000 |
| List-post: | <cq-contest@contesting.com">mailto:cq-contest@contesting.com> |
At 2009-07-04 17:03, Dave Hachadorian, K6LL, wrote: >I had trouble using optocouplers. They wouldn't key the rig. . . . Dave, A reliable system using optocouplers appeared in: QST, Sept 2004, 28-33. The expanded version, with schematics and details, is available at: http://www.arrl.org/files/qst-binaries/hapirat.zip Best regards, Mark, K5AM www.zianet.com/k5am _______________________________________________ CQ-Contest mailing list CQ-Contest@contesting.com http://lists.contesting.com/mailman/listinfo/cq-contest |
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