here's two things i have noticed about my sirius radios. the one in my truck i wired direct to the radio with the optional antenna hook up. i was getting fade out in certain areas with large power lines. on my v-star the radio would fade in alot of curves. i finally figured what was causing it was since my antenna is mounted on the brake reseroir, and was already not perpendicular to the road, when i lean the antenna was losing the satilite signal at the extreme lean angle. the one on my wing works fine cuz the bars are flatter.