[Amps] HF amp output power dropping

[jeremy-ca]

----- Original Message ----- 
From: "Tom Rauch" <w8ji at contesting.com>
To: "jordan moser" <henry8877amp at hotmail.com>; <amps at contesting.com>
Sent: Saturday, September 29, 2007 2:11 PM
Subject: Re: [Amps] HF amp output power dropping


>> It could very well be the plate blocking cap, especially
>> if it is undersized for that power or not even rated for
>> RF use such as the TV doorknobs.
>
>
> Not much chance of that. It is  a self-testing component.
>
> If the plate blocking cap is dissipating hundreds of watts
> it would explode or go up in flames in a matter of seconds.

Try and have it your way as usual. Ive seen plenty of plate blocking caps 
heat up and change the output tuning and still not be at the point of 
failure. I'll mail the next one I find to somone that can do an independent 
verification.

The early SB-220 versions are a prime example.

Carl
KM1H