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No I have not changed my mind about the usefulness of a choke at the feedpoint for controlling CMC.
I am not convinced that a choke at the feedpoint does anything at all for TVI.

As you know, CMC is a RF issue from the feedline. TVI is a problem not limited to the feedline, but may be RF from the antenna. If it is from the antenna then a choke beneath the antenna won't do any good for controlling that TVI.

Bob's solution of utilizing a choke 18' below the feedpoint and a metal mast made the subject about controlling TVI and CMC the matter of interest that it was before, and still is. It is a different design than the traditional choke at the antenna feedpoint, and is worth further study.

[QUOTE="HomerBB, post: 372227, member: 8569"] No I have not changed my mind about the usefulness of a choke at the feedpoint for controlling CMC. I am not convinced that a choke at the feedpoint does anything at all for TVI. As you know, CMC is a RF issue from the feedline. TVI is a problem not limited to the feedline, but may be RF from the antenna. If it is from the antenna then a choke beneath the antenna won't do any good for controlling that TVI. [B][I]Bob's solution of utilizing a choke 18' below the feedpoint and a metal mast made the subject about controlling TVI and CMC the matter of interest that it was before, and still is. It is a different design than the traditional choke at the antenna feedpoint, and is worth further study. [/I][/B] [/QUOTE]

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