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1. [WriteLog] SO2R headphone switching (score: 1): Author: w2up@mindspring.com (Barry Kutner); Date: Wed, 29 Nov 2000 15:26:30 -0500; Currently I have a manual switch to switch headphones between radio 1, radio 2, and one ear for each. Seems to me a relay setup to switch both ears to the non-CQing radio, while the run radio is xmit; /archives//html/WriteLog/2000-11/msg00482.html (7,178 bytes)
2. [WriteLog] SO2R headphone switching (score: 1): Author: pcain@netscape.net (Pat Cain, K0PC); Date: Wed, 29 Nov 2000 15:17:57 -0600; Barry, The LPT port has an output for A/B switching on pin 14. I use it to drive a transistor that controls a DPDT relay. Very similar to the LPT port CW keying circuit. Pat -- WWW: http://www.writel; /archives//html/WriteLog/2000-11/msg00483.html (7,891 bytes)

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