[Johnson] New PTT circuit for Ranger?

[Jim Brannigan]

I agree Cal,
I'm uncomfortable with a relay that is always energized.  The same circuit
would work with coil voltage derived from the 6.3VAC line.

Jim

> Did anyone happen to check out the latest ER and Hal Guertzky's PTT
article for the Ranger? I thought it was brilliant. Only question is: how
long can a relay last in the center tap of the power transformer? What
concerns me is that because of the relay's nomally ON status, eventually,
one would expect that relay to fail (after how many "on" hours, I don't
know). But should that relay fail, exactly how much voltage to ground can
one expect from the center tap to ground? I suspect it is pretty high.
Correct me if I'm wrong, though. Thanks. Cal, n6KYR