It is an advantage to use a Shottky diode for the auto-detect circuit and not
a standard silicon diode.
I've given the arguments for that here: Reliable auto-detect for keyer for
Elecraft K2
http://la3za.blogspot.no/2012/05/reliable-auto-detect-for-keyer-for.html
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Sverre, LA3ZA
K2
Steve,
Virtually any diodes should work in this setting. If you have volts of RF
on your straight key/paddle/computer keying lines, the change to a
conventional silicon diode with its slightly higher offset voltage won't
give you any freedom from false triggering. Are you experiencing RF
Thanks for your comments, Sverre and Mike. Yes, I believe I have had
RF-induced odd keying problems (with a transverter/amp on 144 MHz at about
100-300 W out, the key being around 5m from the antenna, but not in the main
beam). They seemed to respond to moving cables around, putting ferrite
I'm replacing a dead diode in my paddle/key combiner box. Does it matter at
all what types of diodes I use ? I am thinking maybe I should use something
less prone to RF pickup (say 1N4001 or similar) rather than the HP 5082-2835's
(small signal schottkys) I had there originally.
73,
Steve
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