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[AMPS] From KR6C

To: <amps@contesting.com>
Subject: [AMPS] From KR6C
From: k6ndv@contesting.com (Will, K6NDV)
Date: Mon, 4 Oct 1999 13:22:24 -0700
Please reply to Chuck email address.


Hi Guys,

I had a capacitor flashover (a couple of times)on my 160 feed system and the
amp went snap, crackle and pop. I discovered a blown grid shunt resistor and
replaced it but I have no rf output and think the tubes may have blown.

First question: Is there any way to verify if the tubes are gone using a Ohm
meter on the tube pins?

Second:  If the tubes are gone is there a source for medical pulls of
3CX400/A7 or 800/A7 tubes that would make the repair reasonable or look for
a old amp with a pair of 3-500's?

Third:  If there is a source, and either tube is available, will the
MLA-2500 P.S. handle a pair of 3CX800's?

I really like the amp, it fits just right in the operation location but at
the cost of New 8875's or even 3CX400-800's its way out of my financial
reach.

Any thoughts??

Chuck KR6C
KR6C@juno.com
Constant@qnet.com
Charles.Constantine@lmco.com


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