[R-390] Fair Radio R-390A Question?

Wed, 1 May 2002 11:37:17 -0400

That is most likely the MFP coating of the radio.  (Fungus 
protection)
Jeff

  My version, also, has a thin coating
> of some kind of shellac underneath the RF deck.  After many hours of
> cleaning and tightening above deck screws, I finally discovered that the can
> attachment post of one of the transformers, UNDERNEATH the RF deck was loose
> and sitting on top of the shellac coat.  This ground attach point was not
> available on top of the deck, so I was overlooking it.Jeffrey L. Adams  [email protected]  Web  http://www.erols.com/eengineer
* Producer of the R388/R389/R390/R390A/R391/R392/SP600-JX and Hammarlund CD ROM *
Motorola   R390A/URR 1956 14-PH-56   Serial 1409
Collins    R390A/URR 14214-PH-51 Serial 972
Collins    R392/URR  1951 3075-PH-51 Serial 252
Collins    75A3                      Serial 294
Collins    51J4                       Serial 1771
Hammarlund SP-600-JX-26 1953         Serial 13432
Hammarlund SP-600-JX-17 Diversity    Serial 12384