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if your antenna is mounted to a metal pole, and not isolated from it, then choking the coax at the feedpoint isn't really going to have much effect, since the common mode currents will just run down the mast instead. It may keep the RF out of your shack, but it's not going to change the antenna's performance much at all.
LC

[QUOTE="loosecannon, post: 779836, member: 1368"] if your antenna is mounted to a metal pole, and not isolated from it, then choking the coax at the feedpoint isn't really going to have much effect, since the common mode currents will just run down the mast instead. It may keep the RF out of your shack, but it's not going to change the antenna's performance much at all. LC [/QUOTE]

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