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1. [CQ-Contest] Keying interface (score: 1): Author: w0joe@tabby.cooldude.com (Joe); Date: Sun Mar 28 19:45:37 1999; What do you use for a rig interface for the higher current requirements on older rigs, such as Kenwood TS520, etc. with a 2N4400 transistor type interface? I've had some luck driving my Ham Keyer wit; /archives//html/CQ-Contest/1999-03/msg00336.html (6,671 bytes)
2. [CQ-Contest] Keying interface (score: 1): Author: k6ll@juno.com (k6ll@juno.com); Date: Sun Mar 28 21:56:26 1999; On Sun, 28 Mar 1999 19:45:37 -0600 (CST) Joe <w0joe@tabby.cooldude.com> writes: The old rigs used a keying voltage of about minus 100vdc. Here's what I did on my old TS-830: View this diagram with a; /archives//html/CQ-Contest/1999-03/msg00347.html (8,512 bytes)

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