On Mar 7, 9:17�pm, Cecil Moore wrote:
wrote:
The whole thing is so simple that at first I wondered why it wasn't
more common back then.

Ever watch an ART-13 tune itself?
--
73, Cecil *http://www.w5dxp.com

Heh, I have, about 20 years after it first came out. That, and
I used to align R-391s...which were much more fun to watch.
ADA had one commercial Collins Autotune transmitter for
about two years, three racks wide, all the Autotune rotary
power came from a single quarter-horsepower reversible
motor. Fastest-reversing motor I'd seen up to 1953.

73, Len AF6AY