[R-390] R-390 Problems

[ToddRoberts2001 at aol.com]

In a message dated 9/12/2006 6:44:46 PM Eastern Standard Time, 
dhallam at rapidsys.com writes:
I put the receiver back into the rack and hooked up the coax.  Wait a
minute, the reception is changing as I wiggle the coax.  This was a ready
made up RG-8X jumper that I purchased at Radio Shack just before the
problems started.  Close examination reveled a bad connection in one of the
PL-259's.  There must be a moral in here somewhere.

David
KC2JD

I ran into a problem with an R-390A that may be qualified as similar. A local 
ham asked me to check his R-390A that had very poor sensitivity. Indeed it 
was barely receiving signals although everything else appeared good in the 
receiver. On a hunch I pulled the UG-970/U connector on the back and plugged in 
another known good one. The sensitivity jumped back and everything was normal 
again. The hot lead in the UG-970/U was open circuit and no way to fix it. We 
threw away the bad connector. Problem solved. 73 Todd WD4NGG