[R-390] My take on the R-390A Black Faced Receivers and other items of interest.

[Llgpt at aol.com]

Many years ago, conventional wisdom said the last R-390A's produced were on  
the 1967 EAC contract. In March, 1995 I broke the news about the 1984 Fowler  
Industries contract.
Another "source" said that Collins only produced 525 R-390A's. That  
myth/legend was proven to be so much bs too.
 
Since then, several other small contracts have surfaced.
 
Way before that, conventional wisdom said the Hammarlund SP-600-JX-26 was  
the last of the Super-Pro series. Once again, having a SP-600-JLX-27 sitting on  
my bench, I thought, that can't be true. Another quest, another  myth/legend 
destroyed. The last suffix number in that line was a JX-39.
 
Damn, this stuff is getting old, do I have to uncover the Black Faced  R-390A 
info for you guys too?
 
Not to worry, It will be revealed in due time. My trusty sidekicks Tom  
Marcotte and Wally Chambers will have to once again wade into the fray and  destroy 
the naysayers!
 

Les  Locklear
Monitoring since ' 57
Located on the Gulf of Mexico
Bendix  R-1015B/URR
Hammarlund R-274C/FRR (SP-600JX-14)
Ten Tec RX-340
RF  Systems MLB - MK2 
Quantum QX Loop
CU-2279/BRC  Multicoupler
http://www.hammarlund.info/homepage.html