It was written...
"BC-610 output tank coils that were used in a plate modulated
c1940 transmitter that ran a pushpull pair of 833 modulated by 810's
(? before my time). The BC-610 tank used a nifty swinging coil
output link coupling."
I'm sure the BC610 that I used when I was a radio operator for Uncle
Sam was a single 250-TH modulated by a pair of 100-TH's. It did have
a nifty-but-clumsy output tank, but it wasn't bandswitched. If I
were building a new amp for serious use, I wouldn't use much of this
technology. If I were going for the nostalgic orange glow, I'd used
a more modern tube, like a 3-500 (and don't forget the nice purple
glow of the Hg rectifier tubes!)
73,
George T. Daughters, K6GT
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