[R-390] List of R-274 suffix numbers/more A receivers w/o mechanical filters

[Llgpt1@aol.com]

R-274/FRR Hallicrafters military version of SX-73

R-274A/FRR Hammarlund Signal Corps JX-1, JX-12

R-274B/FRR Hammarlund U.S. Navy JX-6, JX-35, also SP-600 JL-24 Special U. S. 
Navy

R-274C/FRR Hammarlund Signal Corps JX-14, JX-26

R-274D/FRR Hallicrafters

And, Ta Da...................

More A suffix receivers without mechanical filters

R-320A/FRC Hammarlund SP-600J-4 (no x-tal frequency control)

R-483A/FRR Hammarlund SP-600J-20 (no x-tal frequency control)

I'm sure there are many more, but my area of expertise is on the SP-600 
series.

For further information, check out "Shortwave receivers Past and Present" 
edition 3
By Fred Osterman. Pages 461 through 464

Les Locklear


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