[r-390] For your R-390 notebook

[ToddRoberts2001 at aol.com]

In a message dated 10/15/2004 4:34:09 PM Eastern Standard Time, 
davidmed82 at yahoo.com writes:
I am working on what will be my second last R-390 restoration. I have worked 
for months on this radio and it is now almost like it came out of the factory. 
Problem was its sensitivity was just awful no matter what I did. Just this 
morning I discovered the problem was in the antenna relay, I believe faulty 
connectors. Replacing this whole assembly resulted in a very sensitive radio. 
Never struck this problem before.
Dave
Glad you found the problem Dave. Another related sensitivity problem I have 
seen once was a friend's R-390A that had very low sensitivity and the trouble 
turned out to be a bad UG-970/U antenna connector - the elbow style connector 
that adapts the twinax input to an SO-239. Somehow the center-conductor was 
open circuit. Replacing with another UG-970/U cured the problem. It pays to check 
the low-tech items first. 73 Todd Roberts WD4NGG.