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Re: [Amps] IM distortion and such

To: Tom W8JI <>,,
Subject: Re: [Amps] IM distortion and such
From: Peter Chadwick <>
Date: Mon, 26 Jun 2006 13:56:26 +0200 (CEST)
List-post: <>
Tom said:
>Not when they approve the operating conditions.<
You have a better opinion of component manufacturers than I have!!!!
>> There is another reason, however, and that is that a 
> manufacturer can have a subtle (or sometimes not so 
> subtle!) change in manufacturing technique that produces a 
> major performance change.

I think the problem here is this thread, like many on this 
reflector, has had a major performance change.<
You are quite right, of course: a lot of exactly what one does is dependent, as 
so often in engineering, on the actual circumstances. I quoted the video amp as 
an example of the problems of relying on uncharacterised parameters. Plus the 
fact that instructions in an operator's manual are just that: if you add the 
engineering justification, you'll most likely find that people ignore it as 
'too complicated' and 'can't understand it'
Peter G3RZP (portable I3 this week - and +35 deg C!)
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