Used for 450-900MHz scanners. Really increases the range compared to other car antennas. I can't replace external antennas in terms of reception, but I didn't have any scratches in the car paint from magnetic brackets or drill holes. I've found that it takes two, one at each end of the windshield, to get the best coverage. Connected two antennas with a simple BNC tee. I will definitely buy again.
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