[Boatanchors] Is this the ULTIMATE SWLing Bandcruiser, or what?

[WA5CAB at cs.com]

Barrie and Phil,

Actually, there are five models of the R-274/URR, R-274 through R-274D, in 
three groups.  R-274 and R-274D, R-274A and R-274C, and R-274B.  Made, in order, 
by Hallicrafters, Hammarlund, and Hammarlund.  It isn't at all unusual for 
later models of a piece of War Department, Navy Department, or DOD electronic 
equipment to be made by a contractor other than the one who originally designed 
and built it, but this is one of the few instances where additional equipment 
was ordered under the same nomenclature but only required to meet the broad 
specifications in the original RFQ.  Outside of any coincidental tubes used in 
common, the only things that the first group has in common with the second and 
third are physical size and frequency coverage.

With apologies to Duane, this three blind men and the elephant discussion 
about R-274(*)'s gets started on one of the boatanchors/military radio related 
lists about every 13.5 months.

In a message dated 8/30/2005 9:02:33 PM Central Daylight Time, 
barrie at centric.net writes: 
> There is another R-274, made by another "H": Hallicrafters.  It's sometimes 
> 
> referred to as the SX-73.
> 

Robert & Susan Downs - Houston
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