[R-390] A little help on sensitivity - where to look

[James Cottle]

Hello to the group.
I finally had the distinct pleasure of turning on my R-390A today after 
building a roll-around rack for it. I have the diode load output 
connected to an old Altec Lansing computer speaker system. Here is my 
problem:
   The AM broadcast band sounds simply fabulous. BFO works, both meters 
work, Veeder-Root is very accurate. I can get NOTHING ELSE! There seems 
to be a distinct lack of sensitivity on most all other frequencies.
   On my ICOM 756 proII, I had WWVH coming in today at a solid S-9 with 
some fading. When I swapped the antenna over to the R-390A, I could hear 
nothing. On further digging, I could hear with the headphone output 
(through some Sony headphones), the WWV signal but barely discernible, 
way down in the mud of the noise and only with the AF gain turned all 
the way up.
    Obvious some work to do on the beast. Anyone have any ideas where to 
start? Thank you in advance for any advice.

Regards,
Jim
AC4EA
San Francisco
ac4ea at arrl.org