I live south of 466A, use Verizon LTE with an I phone 6s and have no problems whatsoever. In fact, I have yet to have a problem anywhere in TV.
As far as a "booster" goes, it sounds like this is a simple range extender for your home router---it does you no good out and about. Depending on your home design and location of your router, you might need one to cover your whole home. But be careful to understand the various encryption protocols and use a strong password, otherwise anyone within a few hundred feet could tap into your network. You might be safe from your neighbors, but their grandkids could be into your personal files in about 30 seconds!
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