First thought is, make sure the FM trap is optioned to the "Fixed Trap In" position. Channel 28 & 33 are not usually the victims of FM interference, but if you have aviation navigation aids nearby you might be able to keep those signal at bay using the trap filter.
Your antenna is pointed right at WALK-FM and WBLI-FM each with signal levels at about -10 dBm. It may be worth adding an external FM trap just on "suspicion", to test.
After that, can you move the antenna up or down, or to another location? some times, a small change can produce surprisingly different reception conditions.
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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)
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Last edited by GroundUrMast; 16-Sep-2011 at 1:20 AM.
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