[Amps] Amp Supply Power Dropping

[Carl]

So what else did you eliminate before we keep spinning wheels?

Carl
KM1H


----- Original Message ----- 
From: "Michael Almeter" <w4mja at yahoo.com>
To: "Carl" <km1h at jeremy.mv.com>
Cc: <Amps at contesting.com>
Sent: Tuesday, April 12, 2011 2:39 PM
Subject: Re: [Amps] Amp Supply Power Dropping


Suspected that one... I experienced the same with two different power 
meters. I thought it might be a loose wire in the antenna tuner - nope.
73,

Mike

W4MJA

--- On Tue, 4/12/11, Carl <km1h at jeremy.mv.com> wrote:

From: Carl <km1h at jeremy.mv.com>
Subject: Re: [Amps] Amp Supply Power Dropping
To: "Michael Almeter" <w4mja at yahoo.com>, Amps at contesting.com
Date: Tuesday, April 12, 2011, 2:35 PM

Sounds like an intermittent power meter would be the initial suspect. Birds 
are especially prone to this.

Carl
KM1H



----- Original Message ----- From: "Michael Almeter" <w4mja at yahoo.com>
To: <Amps at contesting.com>
Sent: Monday, April 11, 2011 6:00 PM
Subject: [Amps] Amp Supply Power Dropping


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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