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Message: [QUOTE="gary350, post: 52538, member: 5449"]What I am says it, I am looking at a graph of the gain of the CM4228 antenna.  Gain is low in the low frequency range and gain goes up and up about double in the high freq. range.  Gain appears to peak about channel RF 42 then drop to RF 51.The antenna CM4228 must be a better match for high freq. than low freq.  I am thinking a variable capacitor and a choke coil could be used to tune the antenna to pick up better in the low freq. range.Check out the link. <a href="http://www.aa5tb.com/tuner.html">http://www.aa5tb.com/tuner.html</a>[/QUOTE]