The ubiquitous Ameritron non-QSK amplifiers
use open frame relays that (according to the
instruction manuals) take approximately 15 ms
to change states. I've been switching my AL-80B
with a PTT signal generated by a microHam CW
Keyer, with the PTT lead time set for 18-20 ms.
It seems to me the 20 ms maximum delay for
the K3 was a pretty good choice.
73,
Chuck Guenther NI0C
K2/10 s/n 5853
K3/100 coming soon
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