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anyone offer any recommendations for an amplifier that will better filter out the FM signals that may be interfering with my reception of Channel 7?
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You'd be better off with an external filter since none of the preamps I've tested, and I've tested most of the ones on the US market, will inadequately attenuate the bottom of the FM sufficiently.
You have two viable options, which you selects depends on how you wish to handle low-VHF, real channels 2-6.
If you don't care about any of those channels, use an HLSJ with the "LO" port capped with a 75 ohm terminator. You can cascade two of these in series on the input port of a lower-noise amplifier for more attenuation of signals below channel 7.
http://www.solidsignal.com/pview.asp...HLSJ%29&q=hlsj
If you'd like to preserve channels 2-5 for future use (maybe), I'd use one or two of the FM filters that we carry in series at the amp's input.
https://www.antennasdirect.com/store...on_filter.html
For a pre-amp, I'd recommend our PA18. Low noise, usually between 1.6 and 2 dB on high VHF at a modest price, under $50 street price. The Juice is a tiny bit (~0.2 dB) quieter, but I can't justify the price differential for that small of an improvement in NF. All the other consumer-priced pre-amps (under $50) are going to have noise figures of about 3 dB or more on high VHF. The absolute quietest pre-amp I've tested was one of the Kitztechs (KT200, IIRC) that measured around .7 dB on high VHF and topped out around 1.0 or 1.1 dB up in UHF.