[R-390] Hi

[ToddRoberts2001@aol.com]

Been enjoying reading all the postings about "A" vs "non-A" nomenclature. 
Thought I would add that as I understand it the military used the "A" suffix to 
denote the radio has mechanical filters in the IF, if the original version did 
not contain them? For example the Collins R-388 became the R-388A  (same as 
the 51J-4). The SRR-11 became the SRR-11A  along with the rest of the 
SRR-11,12,13 series. That is helpful to know if you see a radio up for sale - I would 
rather have an SRR-11A for the tighter mechanical filter selectivity. This has 
probably been gone over before.  73 Todd Roberts WD4NGG.


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