[Amps] SB-200 QSK mod info
Paul Christensen
w9ac at arrl.net
Wed Mar 27 09:37:09 EDT 2013
> From past measurements, transceivers like the Icom 7700/7800, and K3 all
> supply RF > 9 ms after amp key line closure.
That should have read "...supply RF > 9 ms after the transceiver's *input*
key line closure." The time delay between RF output and the *amp* key line
on these three transceivers measures between 6-8 ms. Still, Vasily's
measured switch times are well more than fast enough even if the timing
sequence is not optimum. Just to be clear, this is not a fault of the W7RY
board, but is due to each relay's inherent electromechanical delay.
Paul, W9AC
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