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Re: [TowerTalk] 3CX800A7 vs. GU-74B

To: Charles Parsley <spyderparsley@yahoo.com>, Kevin Kidd <kkbroadcastengineering@gmail.com>
Subject: Re: [TowerTalk] 3CX800A7 vs. GU-74B
From: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Mon, 6 Feb 2017 01:44:19 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Thanks Craig for that info....I found a pair of 3CX800A7's for a good price that should put me in business when they arrive.


Herb, KV4FZ


On 2/5/2017 11:59 PM, Charles Parsley wrote:
I would not use the GU-74 as a triode connected tetrode. It will not work.
Craig ki5vo


On Sunday, February 5, 2017, 5:44:34 PM CST, Kevin Kidd <kkbroadcastengineering@gmail.com> wrote:
D&C Electronics in FL.  Now a Richardson Electronics division.
352-592-7800

That's where I bought the last 3CXP800 drivers for a CCA broadcast tx a
year or so ago.  The CXP version seems to give better life in FM service
than recent versions of the plain 3CX tubes.  There might not be much
difference in HF usage between the CX and CXP versions as I recall the main
difference is that the CXP version will handle somewhat higher plate
voltage.  Otherwise, they may just be a little better quality...


On Sun, Feb 5, 2017 at 4:09 PM, Herbert Schoenbohm <
herbert.schoenbohm@gmail.com <mailto:herbert.schoenbohm@gmail.com>> wrote:

> 3CXP800A7 (medical version used in MRI's) if good, would also solve my
> problem if I could only find a source.




Kevin C. Kidd, CSRE/AMD
Lawrenceburg, TN
AM Ground Systems Company  -  WD4RAT
kkidd@kkbc.com <mailto:kkidd@kkbc.com>  -- 866-22-RADIO -- 866-227-2346
www.amgroundsystems.com

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