Subject: Re: [Amps] Heising Choke
> I can't believe there is anyone still alive who remembers what "heising
> modulation " is !!!!!(except me, that is )
> carl / kz5ca
Hi Carl, and other Old Timers!
I am just getting the tears wiped from my eyes enough to respond!
We teenagers in the '50's could not afford full-blown class-B modulators.
Mr. Heising provided a way for us to upgrade from CW to phone at an
affordable price. What fond memories! I forget the tube layout on my
first transmitter, but it was built on a wooden chassis. I had no TVI
because there were no TV's in my home town. A Hallicrafters SX-71
receiver and a carbon mike element "liberated" from a local pay-telephone
completed the station.
(((73)))
Phil, K5PC
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