It is a good amp, if you use it to its rated output.
The 4cx250b is only rated for 250w plate output. Trying to get more from
that tube will shorten life, and produce much more heat.
I have used that amp running at 150w out and it just gets warm, and it
is solid performer.

Bob N9LVU

whoever wrote:
Not homebrew but you might want to look at it?

-------- Original Message --------
Subject: [Amps] FSENTRON CLIPPERTON V 2meter amp- JUNK!!!!!
Date: Sun, 27 Feb 2005 13:48:40 EST
From: JimMoci at aol dot com
To:

I have for sale a Dentron Clipperton V 2 meter amplifier rated @ 500 watts
input with a 4CX250B. It is in pretty good cosmetic shape except for a
small
ding in the left corners. As far as working condition goes it does work
but I
think this amp is a piece of junk! (Hey I am honest) It has an LC tank
circuit-
it is not a stripline design like it probably should be @ 2 meters. It runs
awfully hot and has a severly under sized blower. The tank circuit is under
sized and runs very hot- so hot that it melted the solder running 200
watts FM. At
300 watts out it runs fine on SSB but I think it is still way to hot. These
junkers are going for $600-700 on Ebay. Why? I dont know why but my
guess would
be a solid state 300watt amp is $700 and you still need an Astron RS70
to run
it. I think it would be fine if someone installed a much larger blower but
that would require hacking the cabinet which would ruin the
collectability of
the amp. At least it would be functional and reliable then. Better yet
would be
to convert it to stripline- there is enough room with some cabinet work and
hacking. It would also be an excellent candidate for a six meter conversion
where a conventional tank design is usable with a 4CX250B. I would like
to sell
this Denny Dentron junker -boatanchor for $550 to someone who can
appreciate it
for what it is!!
Thanks & 73, Jim W3ATV
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KC0EH wrote:

Looking for a homebrew tube type 2 meter amplifier. Prefer one that
uses the 4(X)CX 150 or 250 series of tubes. No power supply
needed.Will consider projects.

...Charlie...KC0EH...