[Boatanchors] Hammarlund receiver ID

[WA5CAB at cs.com]

No.  R-725/URR is a modified R-390A.  

I don't have a listing for R-726.  R-274A,B,C/FRR (but not R-274 or R-274D), 
R-320A/FRR (but not R-320), R-483,A/FRR and R-620/FRR are all that I show as 
SP-600 variants.  It's possible that there were others.

In a message dated 7/26/2007 2:24:02 PM Central Daylight Time, 
telegrapher at att.net writes: 
> Is the R-725 another name for the SP-600 variant?  How about the R-726?
> 

Robert Downs - Houston
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