[Amps] issue with AL-1200 output

[Steve Bookout]

Hello all,

Jim is right  I didn't mention what band.  I guess I was biased toward 
it being the output relay.

It was on 15 meters so I would not expect there to be any padder caps there.

Have been getting ready for field day today, so didn't mess with it.

First thing I'll do when I open it up is to solder across the output relay.

73 de Steve, NR4M

> Date: Fri, 23 Jun 2017 06:09:22 -0400
> From: TexasRF at aol.com
> To: steve at nr4m.com, amps at contesting.com
> Subject: Re: [Amps] issue with AL-1200 output
>
>
> <Steve, this sounds like an output padder C that has lost ESR and heats up
> <with power applied. Heat will cause the capacitance to change. Many
> <amplifiers  use large value capacitors which are known to develop this problem over
> <time. If this is the problem, lowering the power output will take longer to
> <see  the power drop.
>   
> <73,
> <Gerald K5GW
>
> ##  He did not say what band he tested on.   Any loading cap padder would be on the 160 + 80m bands.
> He might want to re-run the tests  on 40 + 20m..... if its fine on  40-10m, then its 99 % likely to be a padder
> on the lower bands.
>
> Jim   VE7RF
>
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