Not surprising for a 1000W input amp run at 1200W out. There are
alternatives on the market that will handle the power and dont park
resonances too close to a band edge plus cover WARC's.
Carl
KM1H
----- Original Message -----
From: "Wayne Rogers" <n1wr@chesapeake.net>
To: <amps@contesting.com>
Sent: Monday, January 02, 2012 6:59 PM
Subject: [Amps] L4B Plate choke
>I just opened up my L4B to do some minor work on it. I noticed that the
>plate choke looks like it has overheated - discolored brown around the
>middle of it.
>
> Wonder if anyone has experienced this - common problem with the L4B? Or a
> symptom that something is wrong?
>
> The amp works fine otherwise - good power out, no sign of parasitics. I
> do work it hard in contests, and run full power in CW.
>
> Wayne N1WR
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