I bought a phone booster repeater from eBay. CDMA850MHz was 40.88. Worked great with Verizon, our mobile tracfone. Att a little bit, but the att tower was on the other side of the house. The signal that was previously broken came in stronger and did not disappear as before, but will still fade. The cell tower is on a hill 2,000 feet above my house to explain the steep angle of the antenna

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