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@kkn.net
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
|