Small update: Talked to my dad tonight and he mentioned his pleasure with XM radio and the SkyFi2 unit. He found the olde-timey radio broadcasts and was enjoying some old dramas on a recent trip. Driving through Southern Illinois, he experienced only modest dropouts near microwave towers. He's found the vent-mount to be the best way to hold the SkyFi2 in his truck. The portable unit was also handy; he lent it to my sister for a weekend trip to Ohio. She and her husband said it worked find the whole way though with some signal loss somewhere in Ohio. And I don't think they were using the antenna. My dad keeps the antenna in inside the truck, sitting on the dash. He's going to try it on the roof and see if that further improves reception. Thanks again for the great review just before Xmas, Ron. It made for a great present for my dad.