[Milsurplus] R390

[mike christie]

I've  inherited  an R390 it doesn't have a data plate on it so I can't tell
if it's A or not.  I have it up and running but the sensitivity is really
bad on all bands.  I can hear WWV on 10 and 15 Mhz but not really strong and
I went to the Amateur bands and I could hardly hear anything there either.
All the controls are working such as the BFO, limiter, Broad & Sharp,  RF
gain etc.  All the tubes are lit and I am getting background  noise. I've
switched between antenna inputs and I get the same results.  When I'm tuned
to WWV the Dial is correct for at least on  10 & 15 MHZ. Also I can hear
when the antenna is plug in also.  So since I'm getting back ground noise on
all bands,  I'm thinking I've got some bad tubes at least on the front end.
I've used one when I was I in USMC so I know what their capable of.  

Can some give me some pointers as to what maybe the problem? 

Thanks

Mike

W1ZFB

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