Hi Julie,
A unun is an auto-transformer, not a choke. It is a matching device.
Does your antenna include a counterpoise? It should -- it's a critical
half of of an end-fed antenna, carrying return current. Without it,
return current flows on whatever wiring is connected to your rig, and
what that's connected to, which SHOULD be Ground, at minimum via the
Green wire at the power outlet.
73, Jim K9YC
On 11/20/2021 10:09 AM, Julia Tuttle wrote:
If this were a fixed antenna, I'd just slap one of the LDG RU-1:1 ununs on
it as a choke, but they're pretty chunky -- they're rated for 100 W CW, and
have SO-239 connectors, which would require adapters on both sides in this
setup.
Does anyone know of a choke more appropriate for this kind of setup? I'd
prefer something smaller (rated for maybe ~40-50 W continuous?) and
natively BNC, so I don't need to juggle adapters.
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