Hard to quantify, but coverage seems to be improving. Compared to the original rubber ducky on a bf-f8hp in a state park with no cellular coverage. 2 repeaters with original antenna. 6 repeaters with this 15" bracelet. Some help around the house. So there's probably a few dB and should have decent coverage. There was concern about antennas being much longer because they can end up with gain and also very strong dips in the SWR. The SWR of the 15" lens has a very wide range for 2m and 70cm.
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