My broadcast towers for all the majors are around 30 ish miles (keep in mind when we talk miles we are talking straight line, not road miles), I get all the majors with an attic RCA Yogi type antenna that I bought at Lowes for $100. I have it hooked into what used to be our paid cable TV distribution panel along with phone ect.
It distributes to 5 or 6 cable outlets in the home, all 5 or 6 TVs get perfect reception.
I did have one channel that was "iffy" at times, Fox, so I bought a cheap RCA signal boaster in Walmart for $13 or so years ago. I see they still sell them but not directly and the price has gone up. The lead from the attic antenna goes directly to the boaster in the photo and the boaster lead goes to the distribution panel on the upper right side of the photo. We have been pay TV free for over a decade now, never an issue with our setup.
Since I only needed a small boast I did not want to overdrive the signal by getting something too powerful. I get 95 to 100 signal on all TVs (most all 100).
I believe the boaster I bought was RCA AMP1450R
Again, if you just need a small boast dont over do it, most TVs will tell you signal strength of each channel.
Amazon/Walmart might be a good bet because you can return it.
This is my setup = (I dont think its still dirty like in the photo *L*)
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