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The metal roof we installed created a "black hole" for cell phone reception inside the home. We had to walk outside to reliably either send or receive texts or make calls. The outdoor dBm strength hovers in the -92 to -114 range. After installation of the Hi Boost 4K system the dBm rose to -12 to -18 for a net gain that exceeded the advertised 60 dBm. Although the increased coverage is largely limited to 1/2 of the house, we now enjoy between 2 to 3 bars and our raincoats have more hang time in the closet.
Lee H.'s review of Powerful Signal earned 14 Very Helpful votes
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Works better than expected. It works where the needed to be
