[Amps] IM distortion and such

[Cecil Acuff]

As a private pilot I can tell you the aircraft manuals contain lots of 
limitations based on the test pilots recommendations.  One for example is 
the "Maximum demonstrated crosswind" numbers...which just mean that was the 
maximum the airframe was tested to...that doesn't mean you cannot land in a 
higher crosswind, it just means if you attempt it you have become the test 
pilot...with all the rights and responsibilities thereof.  In an airplane 
there is a lot at risk, on the operation of a tube not so much at risk.($$$) 
Thorough testing with proper equipment would be recommended to be sure one 
is not wreaking havoc up and down the band would be in order.  A spare tube 
might be handy too!

Cecil....
----- Original Message ----- 
From: "Doug Renwick" <ve5ra at sasktel.net>
To: <craxd1 at verizon.net>; <amps at contesting.com>
Sent: Sunday, June 25, 2006 8:58 PM
Subject: Re: [Amps] IM distortion and such


> Will,
>
> The Wright brothers are glad they didn't have an engineer
> with similar caution.
> Remember that experiment trumps theory EVERY, EVERY time.
> You can only prove how fast she goes by actual testing.
> Theory is only a starting point...prove it in actual
> practice.
>
> Doug/VA5DX
>
> Subject: Re: [Amps] IM distortion and such
>
> Tom,
>
> Sure, you can run over the rated current temporarily, but to
> advise one to do so sets you up for liability. I can not
> tell someone to operate a tube outside the published curves.
> What if I did, then they turned the tube in, and the
> manufacturer refused to replace it after they told them I
> recommended doing that? The person then could come back on
> me for the costs incurred. That is a very possible scenario!
> I will not recommend to anyone on this list to ever run a
> tube outside the listed curves or maximum ratings. That's
> one of the first things I learned when working in
> engineering. Never say something will do more than the
> published ratings. If I had where I worked as an engineer,
> I'd have been fired or severely disciplined for doing it.
>
> Your missing the whole point I'm trying to make, I guess, as
> I'm not alluding to anything about the published Ameritron
> rating, or what has happened in the past. This is just the
> way any working engineer should advise anyone with a
> question concerning maximum ratings and published curves.
>
> Best,
>
> Will
>
>
>
> -- 
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>


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