Topband: What are these weak birdies every 10.0000 KHz?

pfizenmayer pfizenmayer2 at q.com
Mon Feb 22 11:38:18 PST 2010


I will add one more  weird one - I would  get several of those signals on 
160 randomly and I searched all my wires and fences etc with a portable rx 
( was surprised at a couple guy wires but that was not what I was hearing ).

One day I accidentally hit the brake switch on my Ham-M and the birdies went 
away . From then on I could just switch it a few times and that would fix it 
for a day or so.  Apparently rectification in the rotator bearings - or in 
the brake. When I rebuilt all my antennas a year ago I added a flexible 
cable tying the antenna mast to the tower top  and that eliminated the 
issue.

(The guys doing the climbing thought I was nuts )

The whole story is I use a homemade oak top bearing so the mast and its 
antennas floated and the "ground" was through the rotator.So I sometimes 
wonder even with metal bearings if this could not happen when the bearing 
oil/grease film got just right.

73 Hank K7HP



> > Often, the mixing is being done near where the AM
> station is transmitting and is
> > very hard to track down.
> >
> > 73 Tree N6TR
> > tree at kkn.net




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