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Originally Posted by jrgagne99
Any thoughts on what might be going on here? Is this some form of destructive interference where some very low amplitude CH-25 signal passes through the VHF-pass filter and destructively interferes with the CH-25 coming through the UHF-pass section?
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I think it is possible. You have a very weak CH-25 signal coming from BOTH antennas.
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Is this an example of UVSJ's "not always doing what they're supposed to" ?
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It's an example of trying to make a UVSJ do what it was never designed to do.
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and why I've seen several people on this forum recommend using separate coax runs and an A/B switch for UHF and VHF instead of using a UVSJ combiner?
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That can work well if the antennas are aimed at the transmitters.
If you want reliable reception of WNNE, the antenna must be aimed at WNNE.