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Re: [Amps] Parasitics & Filament Sag

To: "'Joe Subich, W4TV'" <w4tv@subich.com>, <AMPS@CONTESTING.COM>
Subject: Re: [Amps] Parasitics & Filament Sag
From: "Gary Schafer" <garyschafer@comcast.net>
Date: Sun, 27 Aug 2006 11:15:39 -0500
List-post: <mailto:amps@contesting.com>
Joe,

Maybe you could tell us where we could read the rest of the story?

73
Gary  K4FMX

> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of Joe Subich, W4TV
> Sent: Sunday, August 27, 2006 1:42 AM
> To: AMPS@CONTESTING.COM
> Subject: Re: [Amps] Parasitics & Filament Sag
> 
> 
> 
> R L Measures wrote:
> 
> > > N7WS made independent measurements of this.
> >
> > N7WS, Wes, was the man who single handedly ended the grate
> > parasitics debate between Tom and me by measuring the Q and
> > parallel-equivalent R (Rp) of a conventional parasitic suppressor
> > and that of a low VHF-Q parasitic suppressor -- And publishing
> > the results without first consulting with Tom. The results:
> > http://www.somis.org/Rp-comp.html
> 
> Rich,
> 
> Your statements concerning the tests by N7WS are completely
> inaccurate.  Your use of his graph without also reproducing
> his extensive analysis of the results is completely dishonest
> and distorts Wes Stewart's own conclusions.  Wes was clear,
> there was no substantive difference between the nichrome and
> conventional suppressors when the value of load resistor in
> the conventional suppressor was reduced by about 35% to more
> accurately reflect the true value of the load resistance in
> the nichrome suppressor.
> 
> The same conclusions have been reached by several other regular
> readers of this list and been confirmed by engineers from three
> amplifier manufacturers and two different tube manufacturers.
> The only difference between your nichrome suppressor and a
> conventional suppressor with the lower value swamping resistor
> is that the conventional suppressor shows LOWER LOSS on 10 Meters.
> 
> Like patent medicines made of alcohol and opiates that were
> in such vogue before the pure food and drug act, your nichrome
> suppressors may make their users feel good but they are not a
> magic cure for the illness.
> 
> That not one manufacturer of amateur amplifiers uses nichrome
> suppressors - even though the marginal cost is insignificant -
> should be a very clear indication that the professionals
> consider your "science" to be without merit and your arguments
> to be completely lacking in integrity.
> 
> 73,
> 
>    ... Joe, W4TV
> 
> 
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