Rich said:
"RF must be in the amplifier to trigger the RF sensing which causes the
relays to close. How could RF not be on the NO relay contacts as they are
closing and yet be on the RF sensing circuit that is energizing the relay
coils?"
Assuming the spike is at the leading edge of the transmitted signal, then an
rf sensing circuit could delay the turn on of the rf amplifier until after
the passing of the spike. If that was the case, then the arcing from the
leading edge spike might not occur. According to the facts given us by Tom,
he did not experience any arcs while the amplifier was rf sensing. That
would be one explanation. It might be the most logical one, too. It is a
simpler, less convoluted approach than parasitics.
K2VCO provided a method of reducing or eliminating the spike and that would
be worth trying out.
Colin K7FM
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