[TowerTalk] 3CX800A7 vs. GU-74B

Herbert Schoenbohm herbert.schoenbohm at gmail.com
Mon Feb 6 00:44:19 EST 2017


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 at 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 at gmail.com <mailto:herbert.schoenbohm at 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 at kkbc.com <mailto:kkidd at kkbc.com>  -- 866-22-RADIO -- 866-227-2346
> www.amgroundsystems.com
>
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