[Amps] L4B Plate choke

[Carl]

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 at chesapeake.net>
To: <amps at 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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