Here's another offbeat idea. If you have an effective grounding point
nearby, you may be able to shunt unwanted residual shield current to
ground. The coax need not be severed. However, I would not trust my
skill at making a watertight connection to the shield after slitting the
outer cover to get at it. And what if the spot is not near a good
ground? An alternative would be to install two quarterwave wires
perpendicular to the coax. Lay them on the ground. To avoid a direct
connection that exposes the coax to the weather, wrap the center of a
halfwave wire around it to capacitively couple the two arms. The wire
would need to be lengthened to maintain resonance. This is a single-band
system. I don't think I'd want this up in the air, but if it was on the
ground in a spot without foot traffic it might be OK. I'd model it and
as much of the RF environment as I could using realistic ground
constants to see how well it might be expected to work in a particular
situation. On the other hand, if the coax was on the ground it might be
worth the trouble to install connectors and a choke.
Realistic ground constants:
https://k6sti.neocities.org/hfgc
Brian
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