On 1/12/2026 5:23 PM, Jeff Blaine wrote:
Tom, I'm emphasizing what Jim mentioned earlier. If the antenna
resonant point moved by adding the choke, then that means the feedline
was participating to some extent as "part of the antenna."
Yes, but in Tom's configuration, even with the world's greatest choke,
the feedline can still be a parasitic element.
My belief is that without a feedline choke, you simply cannot guarantee
that the feedline will not participate. So every antenna here (19 of
them) has a feedline choke of some form.
Yes. And feedline chokes also reduce interstation interference, whether
SO2R or multi.
73, Jim K9YC
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