[R-390] R390A Classicication results

[Richard Spargur]

I worked on the R-725 for several years 1970-1973.  A gross way to describe
the difference with an R-390A is to say it is essentially an R-390A with an
R-390 IF deck.  The mechanical filters in the R-390A's IF deck's mechanical
filters caused distortion which made it un-usable for direction finding
applications.  Initallially the manuals would have been classified until
they were fielded in systems, but I never saw one.  The ones I had, had no
classification markings at all.

As a side: note I want an R-725 if one needs or wants a new home.  Does
someone have an electronic copy of the manual?

Richard
K3UI  

Date: Thu, 10 Apr 2008 17:46:23 EDT
From: DJED1 at aol.com
Subject: Re: [R-390] R390A Classifcation results
To: JRFKE5RI at aol.com, r-390 at mailman.qth.net
Message-ID: <bc0.2d27b227.352fe4af at aol.com>
Content-Type: text/plain; charset="US-ASCII"

Sounds right.  I did find a post on the net that said that the R-725  manual
was classified.  This falls under your category of special  modifications. 
Ed  W2EMN