[Johnson] another question

[email protected] [email protected]
Tue, 30 Dec 2003 10:55:58 EST


hi Ken,

    On your fuse blowing, I had a similar problem with a Viking II about 35 
years ago. It turned out to be a gassy 6146 tube in the final. If your fixed 
bias is okay, I would try replacing one or both of your 6146 tubes. You might 
look for a bright blue glow between the cathode and the plate just before you 
lose the fuse. It is the symptom of the ionized gas.
Hope this helps.

                                                                             
73--Joe--W1PNH
>>>
I have a minor and irritating problem with My Viking II.  It blows it's fuse 
regularly
Here is what it does.  when I am tuning it up going back and forth between 
the controls
bringing it into tune.  What happens is as I am watching the meter in the 
plate position
as I tweak and dip the plates the needle will slowly creep up and up, and if 
I don't un key it will suddenly zoom up peg it's self and the fuse blows. I 
have checked and tweaked, replaced, adjusted the voltage divider, idle 
current, etc. this Viking II has the clamp tube and it is adjusted as it 
should be. Does anyone have a tip as to what to look at. The radio sounds 
great on the air, but it seems to be fragile, look at it to hard a it blows 
the fuse.


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