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Originally Posted by rabbit73
That is the ch 10 pilot. What are you using as a tunable receiver? Have any trees grown into the signal path. You do have one strong FM signal coming from the south, based on my estimate of your location. The FM filter in the preamp might not be enough.
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Using a couple of radios. An Icom R7000 and Kenwood TH-F6 (Handy Talky).
There ARE some trees to the North & South edge BUT I have a pretty clear shot in the direction of the transmitters. Might be FM, as WPDH is also L.O.S. to Illinois Mt. and puts out a pretty hefty signal. I think I may have an extra FM filter in my junk box. I'll give that a try.
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How did you bypass the preamp? Did you completely remove it from the circuit?
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Yup. With the loss on the wire, I figure it would knock the signal down enough.
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You don't have just one very strong channel, you have two;
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I think you nailed it. Didn't think about that. I would LOVE to remove ch 27 (full time religious station), but I cannot find any reasonably priced, single channel filters. If this was HF, I could probably 'roll-my-own', but I've never been very good at winding coils with any accuracy. I've got a number of pads that WILL knock down everything. The problem is that the CT UHF stations are not strong enough to overcome this. As I indicated, without the preamp, they don't survive the coax losses. If you know of any place that sells inexpensive channel traps, let me know.
Two mysteries solved. I probably will not be able to fix the issues, but at least my curiosity has been satiated. Any ideas on why Ch 33 fades in the daytime?
Thanx again
Rich