[Hallicrafters] Identification of SX-62

[Waldo Magnuson]

I am working on two SX-62s and have schematics 89D282-A and 89D282-B 
(SX-62A & SX-62AU Run 2).  Is there an easy way to tell which model I'm 
working on besides pouring over the schematics and the chassis wiring 
looking for differences?  Thanks.
73,  Skip  W7WGM