[ARC5] (Fwd) Re: R-10 in the receivers.

[Mike Everette via ARC5]

Richard,

You are quite correct in the reasoning behind the lack of AVC.  Your post reminded me of something I read about "course reversal" phenomena on the ranges; and this was caused by AVC action.  I can't remember where I read this though.  May have been in an old Kaufman "Radio Operator's License Q&A Manual" when I was studying for an FCC exam.

73

Mike
WA4DLF

--------------------------------------------
On Wed, 9/24/14, Richard Knoppow <1oldlens1 at ix.netcom.com> wrote:

 Subject: Re: [ARC5] (Fwd) Re:  R-10 in the receivers.
 To: "Mike Everette" <radiocompass at yahoo.com>
 Cc: ARC5 at mailman.qth.net
 Date: Wednesday, September 24, 2014, 6:26 PM
 
 
 ----- Original Message ----- 
 From: "Mike Everette" <radiocompass at yahoo.com>
 To: <ARC5 at mailman.qth.net>;
 "Richard Knoppow"
 <1oldlens1 at ix.netcom.com>
 Sent: Wednesday, September 24, 2014 2:52 PM
 Subject: Re: [ARC5] (Fwd) Re: R-10 in the receivers.
 
 
 One of the Surplus Radio Perversion Manuals, I think Volume
 3, has a short article about how to add an AVC circuit to
 the SCR-274N and ARA receivers.  Simple but effective,
 and
 reversible if need be.  It does not require major
 work.
 
 However, my experience with the SCR-274 and ARA does not
 lead me to think it's all that necessary.
 
 73
 
 Mike
 WA4DLF
 
      AVC voltage should be available
 from the detector.
 Since these receivers were used for radio-range and perhaps
 also for direction finding the variation in signal strength
 may have been important to preserve, hense no AVC.  I
 think
 they were designed with a specific function or application
 in mind and to be as fool proof as possible.
 
 
 --
 Richard Knoppow
 Los Angeles
 WB6KBL
 dickburk at ix.netcom.com