I mounted a antenna on my quater panel. Origionall I had a four foot FirestickII and It worked perfectly. Unfortunantly the wieght of the fiberglass antenna was to great and it caused to much flex on my quarter. I then purches a 5 foot regular antenna and hooked it up to a swr meter. After cutting about 6 inches off it the best reading I could get was 2.3:1 ratio. I now only transmit at 70% on channel 1 and full power only on chaneels 36,37,38,39,40? Why is this? Do I need to make it longer, shorter?