Krack Johnson wrote:
I have a question about keying my Kenwood TS-530s. I want to key this
directly from my computer but am having problems finding an interface. What
kind of circuit does the ts530s use? Is it a grid block and if so can I use
a grid block adapter and a normal serial interface?


A reed relay should work just fine, unless you're into QRQ CW. You can
also make one with an opto-isolator. I believe that the keyer line
voltage is negative on the tube rigs. Very easy to measure directly on
your hand keyer and design appropriately.

73 ... WA7AA




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