[GreenKeys] Suggestions for RTTY tone decoder

[WA5CAB at cs.com]

Actually, the R-274(*)/FRR is more convoluted than that.

SX-73 based = R-274/FRR and R-274D/FRR

SP-600-JX based = R-274A/FRR and R-274C/FRR

SP-600-JX6 based = R-274B/FRR

Another good bad example is the AN/URM-25 family, which ran from the basic 
all the way out to the L model.  There are four different signal generators, 
all with the same basic set nomenclature.

SG-44
SG-85
SG-111
SG-103

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 05/01/2017 11:58:17 AM Central Daylight Time, 
navy.radio at gmail.com writes: 
> Just when you think the powers-that-be decided to finally pay attention 
> to the AN/ nomenclature system they tossed in something like the URA-8 vs 
> -8A or -8B.
> 
> Or the R-274() Hammarlund SP-600 vs R-274D Hallicrafters SX-73
> 
> At least those examples were functionally the same.
> 
> 
> My favorite so far is the URA-17A to -17D vs the URA-17E,-17F, and -17G. 
> The E/F/G versions have full TUs (CV-3510()) with AFSK keyer as well as 
> receiving converter.
> 
> Cheers
> 
> Nick England K4NYW
> 
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