Screw-on telescopic antenna with loose base?
"Ken C" wrote in message
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I am using screw-on telescopic antennas for my doppler rig.
These have four dimples at the base securing the tube to the base.
After a while, the tube comes loose from the base and the antenna will
no longer screw off or on because the tube turns freely about the
base.
I have tried using a pointed punch to increase the dimples, to no
avail.
They are $5 apiece from Mouser, so if possible, I would like to
salvage them. I seem to get around eight on-off cycles per antenna. I
am tightenting them only by hand.
It is possible that some of the loosening is cause by the bending
force of the 55 mph wind on a 19" whip.
Any suggestions?
Ken KC2JDY
Hi Ken
I wonder if you could increase the life by forcing a sleave over the tube
where the dimples are. Actually, I thought of a small clamp around the
tube where the dimples are, but I suspect the tube is rather small diameter.
Besides, I'm not sure I am understanding the problem properly.
Jerry
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