[Boatanchors] Sp-600 info

[Greg Roecker]

Larry,

Al Parker, W8UT is the guy that knows the most about the SP-600.

There is an article in the March 1967 CQ magazine, page 67 on "A Product 
Detector for Military Receivers" that describes a circuit for the SP-600. 
There is also an AVC mod to change the AVC to fast-attack slow-release.  I 
have no experience with either circuit so can't comment on how they work.

73,

Greg/n4osj

-----Original Message----- 
From: telegrapher at q.com
Sent: Thursday, June 27, 2013 12:19 PM
To: Boatanchors
Subject: [Boatanchors] Sp-600 info

I wonder if there was ever a product detector circuit ever built for 
inclusion in the radio for one of these?  Or if one was just conjured up out 
of existing circuit design?  If so, what tubes did it utilize and what 
tube(s) did it replace?

Larry
W0OGH
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