All this talk about relays and QSK has me wondering why aren't PIN
diodes used more commonly? Then I began to read about some of the
atrocious swtiching that goes on with some rigs.
I have an AL-80A with the integral PIN-5 QSK switch. I've only ever
used the amp with my Kenwood TS-930S and my TenTec Orion II, both
without problems. The switch unit itself does have some low-current
incandescent lamps in the switch to act as fuses in case the timing
is not correct, but these have never given me any trouble. So, I must
conclude that the timing has always been appropriate.
But, this does lead to a question: are PIN diodes avoided simply
because using them is far more complex than relays, or is there some
other reason they aren't often used?
Kim N5OP
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