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Well there you have it JoeDirt from 2 of the more knowledgeable members on the forum.


Coax lengths don't rid CMC nor do they tune antennas. There are exceptions for tuning like stub matching and multiband antennas that deliberately use part of the coax as a radiating element.


What I learned to use for CMC on a mobile antenna is making 7 turns of rg8x about 4 inches in diameter and use a mix 31 snap on ferrite. CMC issue resolved!  This creates inductive reactance as Captn KW stated.