Today I replaced my unity gain Larson mag mount antenna with a new Tram 1180 dual band antenna. Signal strength form distant repeaters was doubled and the SWR is below 1.5 across both the 2 Meter and 70 cm bands. Our local repeater is on 146.960 and the SWR there is 1.13. I look forward to further testing in the future as I want to compare the 1180 with the Maxrad MDB1444S. I am interested in the Maxrad because it has a spring and with antenna on the roof I may need a spring when I am off-road.