> Around 1980-84, I was an RF engineer on a team that built a series of
> new FM broadcast transmitters in Quincy, Illinois. All were tetrode
> designs using the newest tubes with handles from Eimac at the time,
> 4CX3500A, 4CX7500A, 4CX12,000A/8989, and 4CX20,000A/8990.
John,
Were you on the design team for the BE transmitters of that era that started
the "folded half-wave" cavity design, eliminating plate blockers? If so,
kudos to you. I've had the pleasure (mostly pleasure anyway, hi) of
installing and maintaining many of them over the years.
--- Jeff WN3A
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