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Old 12-Jan-2015, 7:30 PM   #3
GroundUrMast
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Join Date: Oct 2010
Location: Greater Seattle Area
Posts: 4,773
If it's the trees, wind and moisture on the trees will generally make the symptoms more pronounced.

Aircraft flying past may account for such symptoms. They reflect signal, causing a form of multi-path interference at your antenna. You mentioned a regular pattern... Are you under the flight path of the approach to a scheduled airport?

As already mentioned by ADTech, moisture in a connection of matching transformer will produce degraded system performance. The simple test is to disassemble, inspect and substitute known good parts in place of the potentially compromised parts. Generally, a cable with moisture inside the jacket should be discarded, it will have been permanently damaged due to corrosion.
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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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