[R-1051] Update - Pretty Much Working

[David Wise]

Thanks, Al, I bookmarked it this time.

Although they're both good references, we're talking about
two different manuals.  My fault not yours.

The one I mentioned in my original post, Navships 0967-034-2000,
is "Repair of AN/WRC-1 and R-1051/URR 2N Modules", hosted
by Andy Moorer at www.jamminpower.com/main/r1051.html .
It contains instructions for, among other things, taking
apart the 1MC synth.

Your manual is TO-31R2-2URR-221C, "Supplement, Technical Manual,
Radio Receiver R-1051B/URR and R-1051C/URR" .  It is
dated 15-May-1972, and replaces two earlier similarly-named
Supplements from 1968 and 1964 respectively.

This Supplement is a change package for
NAVELEX 0967-LP-970-9010.pdf (which I got from
Andy's site).  NAVELEX describes the R-1051 plain.
As modified by the Supplement, it describes the R-1051C
instead.  (Although the title page says "B", it's never
mentioned again.)

By the way, Figure 5-93 (100cps Synthesizer Electronic
Subassembly, Right Side, Component Location) shows the
cordwood-construction flip-flops mentioned in March 2007
by Dennis McLaughlin.  He has a 100cps module made with
Fairchild MicroLogic RTL IC's.  My guess is, Dennis
has a D or E module while John Schmitz has an
A, B, or C.  (F, G, and H are card cage not six-pack.)

Francesco Ledda has a photo of an R-1051A.  I've also
seen photos of an R-1051B and an R-1051C.  Aside from
the C's black front panel, I don't remember seeing any
differences.  Are there any?  I have this notion that
they are all the same, just the A was made by Elmer,
the B by Bendix, and C by General Dynamics.  Right?

Thanks,
Dave Wise

>-----Original Message-----
>From: Al Parker [mailto:anchor at ec.rr.com] 
>Sent: Wednesday, August 01, 2012 10:32 AM
>To: R-1051 Discussion Group
>Cc: David Wise
>Subject: Re: [R-1051] Update - Pretty Much Working
>
>Hi Folks,
>	In case anyone would like a cc of the manual Dave 
>refers to, it's at:
><http://www.boatanchors.org/R-1051.htm>
>
>This link was created in 2007 to host a little-known manual for the 
>R-1051, as Dave pointed out to me a few weeks ago, after he 
>had found it 
>by a difficult search.  He suggested I get a link to it on my 
>home page, 
>which I have not done yet, but will, when I get a round tuit.  
>As can be 
>seen at The Hammarlund Historian site, I'd rather work on boatanchors 
>than on websites.  Some months very little of either gets done.
>73,
>
>Al, W8UT
>www.boatanchors.org
>www.hammarlund.info
>
>"There is nothing -- absolutely nothing -- half so much
>worth doing as simply messing about in boats"
>Ratty, to Mole
>
>On 7/31/2012 7:03 PM, David Wise wrote:
>> I found a procedure for removing the 1MC motor in
>> NAVSHIPS 0967-034-2000 (Technical Manual for Repair of
>> AN/WRC-1 and R-1051/URR 2N Modules), which I got from
>> Al Parker's boatanchors site after discovering the
>> link in the mail archive.  It's paragraph 3-5.