[Milsurplus] SRR-13 question

[WA5CAB at cs.com]

I'll add a few comments based on my experience and observations.  The 
AN/SRR-11/12/13 family, along with the contemporary AN/SRT-14/15 seem to have 
been installed in ships commissioned when the radios were new (early 50's).  
They don't generally seem to have ever been retrofitted to ships originally 
launched with RBA/B.C receivers and TBL and later WW-II transmitters.  
Instead, excess stock was installed in Reserve Centers in the 60's while R-390A's 
and a mix of AN/WRT-1/2 and AN/URC-32 were backfitted in the older vessels 
going through overhaul and upgrade.  Then R-1051's and AN/URT-23's began 
replacing R-390A's and AN/WRT-2's.  AN/SRR-19's replaced RBA's.  AN/WRC-1's 
replaced TCS's.  Reserve Center RM's that I knew in the 60's and early 70's 
generally didn't have a high opinion of the SRR's or SRT's.  I never actually 
served on a ship that had any of them.  Only on ships that still had a full 
complement of WW-II gear or ones upgraded in the 60's.

In a message dated 11/20/2009 7:08:23 PM Central Standard Time, 
holden7471 at msn.com writes: 
> Nice time-line Nick.
> 
> I served at two Navy shore stations in the late 60's-1970, NAW Guantanmo 
> Bay and NGR Nea Makri Greece.
> 
> Gitmo had mostly R-390A's, two FRR-60's. No R-1051's, and only one FRR-59, 
> which had not yet seen service at the time I left there early 1968. I did 
> get a chance to play with the '59 and was not overly impressed for its 
> complexity. The FRR-60 seemed a whole lot better and less fussy.
> 
> Greece had a ton of R-390A's, a few R-1051's and no FRR-59's or FRR-60's. 
> Left there April 1970.
> 
> At both stations R-390A's were the main receivers, used extensively in 
> multichannel  time division multiplex ISB work, as well as CW and single 
> channel TTY. 
> 
> Didn't see a single SRR at either station, but did see them in RM school 
> in Bainbridge early 67.
> 
> A good op could keep and R-390A "on channel" in multichannel use once he 
> learned to get the right mux tones zeroed. Typically they did not require a 
> whole lot of adjustment if they were in a temperature-stable environment.
> 
> Howie WB2AWQ
>   ----- Original Message ----- 
>   From: Nick England<mailto:navy.radio at gmail.com> 
>   To: 'Ray Fantini'<mailto:RAFANTINI at salisbury.edu> ; 
> milsurplus at mailman.qth.net<mailto:milsurplus at mailman.qth.net> 
>   Sent: Friday, November 20, 2009 11:04 AM
>   Subject: Re: [Milsurplus] SRR-13 question
> 
> 
>   Here's the major Navy receiver development timeline as I understand it -
>   installations varied all over the place of course with RBB's still found 
> on
>   some ships into the 1970's. The Navy's primary emphasis post-war was on 
> RTTY
>   message handling, first with 850cps shift single channel, then later 
> 8-16
>   channel tone packs with 85cps shift, requiring high stability (spec for
>   WRR-2, FRR-60, etc. was 0.1 cps at 10 mc).
>   Nick
>   www.navy-radio.com<http://www.navy-radio.com/>
> 

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