This may be purely a coincidence, but since the channel lineup change on Feb. 14th my reception has worked for about 10-15 minutes and then it cant find the antenna. I have a Sportster and an S-50 in my work vehicle, and when I start it up in the morning everything works fine for about 10-15 minutes. Then I lose everything and it cant find the antenna for the rest of the day. Its almost like a temperature issue, as it works when its cold when I first get in my vehicle, but then as things heat up it just stops. Anyone else experience anything like this? I have 2 different antennas that I have tried on both units. I have a 3rd antenna in my car that I will be trying out today. I wouldnt think the channel change would have anything to do with it, but you never know.