[Milsurplus] SRR-13 question

[Al Klase]

Nice rundown, Nick, and your website's pretty cool as well.  I think 
most of us fail to appreciate the impact RTTY had on post-war receiver 
design. 

Regards,
Al

Nick England wrote:
> 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
>
> SHIPBOARD RECEIVERS
> -------------------
> pre-WW2 - RCA develops RBA, RBB, RBC - octal tubes
>
> Late 1940's - RCA develops AN/SRR-11,-12,-13 series. Subminiature tubes,
> modular construction, conventional dual-conversion design with LC HF
> oscillator. Widely used for single channel RTTY as well as CW.
>
> Mid 1950's - Collins develops R-390()/URR for Signal Corps. Adopted by USN.
> Crystal-controlled HF Oscillator and PTO give high stability for CW, SSB,
> and RTTY - but not really stable enough for multi-channel RTTY?
>
> Late 1950's - National develops AN/WRR-2 frequency synthesized dual-Wadley
> Loop receiver. Highly stable for ISB and multi-channel RTTY
>
> Mid 1960's - General Dynamics develops R-1051/URR synthesized transistorized
> receiver - primarily for multi-channel RTTY
>
> SHORE STATION RECEIVERS (mainly diversity setups)
> ------------------------------------------------
> pre-WW2 - RCA develops RBP, RCP. Western Electric develops ???
>
> Late 1940's - National develops triple diversity AN/FRR-24 for FSK. LC-based
> HF oscillator with high mechanical stability.
>
> Early 1950's - Northern Radio develops dual diversity AN/FRR-28 based on
> Hammarlund SP-600 for FSK. Conventional dual conversion with add-on
> oven-stabilized LC-based HF oscillator
>
> Mid 1950's - Collins develops R-390() - dual diversity FSK with AN/URA-8A
> converter. SSB with CV-591A or CV-157 converter. xtal HF osc + PTO.
>
> Late 1950's - National develops AN/FRR-59 (same as WRR-2) for SSB
> multi-channel RTTY. synthesized high-stability design
>
> Early 1960's - TMC develops AN/FRR-60 synthesized diversity system for
> multi-channel RTTY.
>
> Mid 1960's - General Dynamics develops R-1051 - overlaps with AN/FRR-60. 
>
> -----Original Message-----
> From: milsurplus-bounces at mailman.qth.net
> [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Ray Fantini
> Sent: Friday, November 20, 2009 9:01 AM
> To: milsurplus at mailman.qth.net
> Subject: [Milsurplus] SRR-13 question
>
> Wonder if the AN/FRR-21 and SRR-11 drifted as bad as the HF version the
> SRR-13, and what was the point of the SRR-13? Was it supposed to replace the
> R-390 for shipboard operation? Or was it used between the old WW2 series
> RA/RB and the like stuff and later replaced by the R-390 and being that the
> R-390 was built as a ground base Army radio was the navy so annoyed at this
> that went to something like the SRR family of radios? And last but not least
> what was the line of radios deployed for HF operation? Was it SRR to R-390
> to R-1051? Or R-390 to SRR to 1051?
> Ray Fantini KA3EKH
>
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-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/