Since you live in ND, with relatively no "noise" to interfere with your signal, I say your reception will be quite good with only the basics
The signal pattern and strength will be a factor. As well the noise I was refering to is radio towers, buildings etc.
Before getting overly concerned on will it work or not, Have a contingency. If you have "A" on hand and you believe may not be good enough, go buy "B" a few days before Feb 17th, which is your "better" plan. If "A" works, great. Take "B" back with your reciept.
By the way, 100 miles without a tower? I am by no means knowledgable on analog and digital signals, TV stations have been reducing their power output gradually, in steps. Those people on the outer fringes of normal reception will definately see the 55% you experience.
I worked at a radio station for years. The difference in coverage between a day and night transmission pattern is huge. If TV cut their power by 50% like mandated by FCC, you will not see a signal improvement until Feb 17th.
Unless, that is, you spring the $34.99 a month for "condo cable".
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