[Icom] More on isolation relay with non-ICOM amps

[Adam Farson]

Hi Larry,

Did want to throw one more comment in:

<< I don't doubt the longevity of the relays as long as
they operate under proper ratings. I was just under
the impression that the relays were failing because
the SPEED of operation rather than the NUMBER of
operations had exceeded the specs. >>

Our accelerated life testing at 10 and 20 pps did not disclose any increase
in failure rate as a function of the higher pulsing speed.

<< A local ham fused the contacts in his ICOM the first
time he tried it with a non-ICOM amp. The amp would
not unkey. >>

Wonder what amp he was using, and what the keying-line voltage and current
were?

Cheers for now, 73,
Adam VA7OJ/AB4OJ