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Re: [Amps] Amp Supply Power Dropping

To: Michael Almeter <w4mja@yahoo.com>
Subject: Re: [Amps] Amp Supply Power Dropping
From: Mike Tubby <mike@tubby.org>
Date: Tue, 12 Apr 2011 19:52:09 +0100
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Possible amp working normally and power meter intermittent fault?

Mike


On 11/04/2011 23:00, Michael Almeter wrote:
> Hello All,   I've got an interesting problem with my Amp Supply LK-500NTC. 
> While operating a contest this weekend, I watched as periodically, the power 
> would drop down to about 100 watts output (with about 50 watts going into the 
> amp from the transmitter). I'd give the amp a second, and the power would go 
> right back up to about 500 watts.    I initially thought this was 
> overheating, so I turned the internal fan on full blast. This didn't seem to 
> make that much of a difference. Every once in a while, the amplifier would 
> not have any output. Between 50 and 90 watts going in, but nothing coming 
> out. This makes me think there's a connection issue in the amp, but I haven't 
> been able to find one - yet. While there was low output or no output, the 
> plate and grid current on the amplifier remained within normal ranges.    Any 
> one got any ideas?
>
> 73,
>
> Mike
>
> W4MJAdiv>
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