Reg Edwards wrote:
No arcing problem that I ever detected. Transmitter was 100 watts. I
think the relay was rated at 750 volts and it may have been a vacuum
type.

That's a pretty husky reed relay but you are lucky
it didn't arc. Peak-to-peak across that relay was
higher than 750 volts if it was installed in a 1/2WL
dipole.
--
73, Cecil http://www.qsl.net/w5dxp