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Re: [Amps] 3CX1500A7/8877

To: <jtml@vla.com>, <amps@contesting.com>
Subject: Re: [Amps] 3CX1500A7/8877
From: "Jeff DePolo" <jd0@broadsci.com>
Date: Mon, 13 Feb 2017 11:15:47 -0500
List-post: <amps@contesting.com">mailto:amps@contesting.com>
> 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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