[Milsurplus] R-392 Advice Needed

[W7QHO at aol.com]

Joe,

Dead band, look first for a dead xtal.   Fair Radio has spares last time I 
looked.   Low sensitivity, first check the tubes.   At 28 volts B+ these are 
working way out on the extreme ends of their characteristic curves.   Don't have 
to drift much to be out of operating range.

Other stuff:

6AK5 works ok as replacement for the 6AJ5 

I've had slugs break loose from their adjusting screws on the RF tuning 
racks.   Glue back in place with epoxy.

Double value of coupling cap from BFO to 2nd detector for better ssb 
reception.

Mating plug for front panel power/control receptacle hard to find.

Dennis D. W7QHO
Glendale, CA

*******

Original   message dated 12/18/06 4:20:44 PM, carolew at bellatlantic.net 
writes:


> Guys, I just picked up a rather beat-up R-392. It works on all bands
> except the 3 mHz band (crystal?). I have TM 11-858 to guide me along.
> This one is not as sensitive as my other R-392. However, it's all there
> and looks to be in decent shape.
> 
> Before I dive in, I was wondering:
> 
> 1. Any particular caps or resistors that tend to go bad?
> 
> 2. Anything else to watch for?
> 
> 3. Any other tips?
> 






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