I replaced the CM-2016 with a Winegard HD7694P today, and checked the relative signal levels.
There was a massive improvement on real channel 7 (SNR increased 11dB), I now get real channel 9 with excellent SNR where I couldn't get it at all before, and I can barely get real channel 13. Still can't get real channel 11. SNR stayed the same or slightly improved in the UHF range as well, with most of the improvement showing up in real channels 28-36.
I could try wandering the roof again with this antenna, but the current location did seem to be the best overall with the CM-2016. Worth trying?
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