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or pointing my existing antenna at 34 deg (instead of 15 deg.).
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Why is it aimed at 15 degrees? Is it because Fox comes in a little better at 15 instead of 34 degrees?
I see a lot of trees in your area. If it isn't the trees, it's fundamental overload from TV and FM signals.
Your FM signals
http://www.fmfool.com/modeling/tmp/1...2/Radar-FM.png
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KMSP (Fox) has very low signal strength on my TV and pixelates to the point of not being watchable.
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Fox is the weakest in that series of channels. The weakest is first to be affected from overload.
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KMSP is one of two VHF channels. I'd try an FM trap.
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Good idea.
The FM interference doesn't need to be a harmonic, it can be fundamental overload.
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If you have any remaining Radio Shack stores around, call them and see if they might have a 1500024 (15-0024) FM Filter on hand.
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The RS filter isn't suitable. You have KBEM-FM on 88.5 MHz only 0.8 miles away with a signal power of -9.9 dBm, if my estimate of your location is correct. You can do your own FM signal report here:
http://www.fmfool.com/index.php?opti...pper&Itemid=29
A suitable FM filter would be the MCM or better yet a HLSJ using the high and common ports.
http://www.mcmelectronics.com/produc...-FM-88-/33-341
Your first three TV signals have a Noise Margin over 73 dB even before adding antenna gain, which is overload territory.
Interpreting Noise Margin in the TV Fool Report
http://www.aa6g.org/DTV/Reception/tvfool_nm.html
It might be worth the trouble to insert an attenuator to make your signals a little weaker.