W9OY wrote:
> I built my first "QSK" amp in about 1981. ... I made the relay
> out of a bunch (around 12)of parallel surplus glass
> vaccuum reeds that I wound a common coil for ...
Wow! You probably didn't "hot switch" them which is one reason why they
worked. I am still using a mercury wetted relay to switch the antenna in my
QSK system. A Western Electric 276 type, rated for switching 5 amps in
telephone service, handles the 600 watts output of my SB200 on CW into a 50
ohm load quite nicely. No I don't hot switch it either. And it makes a
barely audible "plink" when it switches.
Jim, W8KGI
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