Re: [Amps] Linearity metering

["Barry Kirkwood" <bjk@ihug.co.nz>]

There was an article on this topic in QST, back in 70s as I recall.
73
Barry

end
Barry Kirkwood PhD ZL1DD
Signal Hill Homestay
66 Cory Road
Palm Beach
Waiheke Island 1240
NEW ZEALAND
ph/fax 64-9-372-5161
www.waiheke.co.nz/signal.htm
----- Original Message ----- 
From: "Steve Thompson" <g8gsq@ic24.net>
To: <amps@contesting.com>
Sent: Friday, October 08, 2004 8:34 AM
Subject: Re: [Amps] Linearity metering


> On Friday 08 October 2004 02:16, Jason Buchanan wrote:
> > I noticed in the 1972/1973 ARRL handbooks that I have there is a 4-1000A
> > amplifier project with a linearity metering circuit.  Look for the
> > SS-2000 project.  This seems like an incredibly good idea, however I
> > have never seen anything like this in any other amplifier except for
> > something similar apparently in the ACOM 1000A (and presumably the
> > 2000).  It seems to me that the ability to tune for optimum linearity
> > would be a "Good Thing"(tm) and the circuit design appeard to be simple
> > to implement.
> >
> > Was the original designer of this circuit blowing smoke or is this
> > something worthwhile to add to a homebrew amp?
> Several replies have mention Collins gear having the indicators - optimum
> tuning indicators and linearity tracers are discussed in 'Single Sideband
> Principles and Circuits' from 1964. Two of the authors worked for Collins 
> at
> the time.
>
> Steve
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