i have a wilson fiberglass antenna i got from radioshack, it was 20bucks i think about 5 feet tall, i was tempted to get the 8 foot aerial whip, but just went with the 4-5foot fiberglass one, plus its got an easy tuning rod thing, for tuning it. basicalyl i just losen a screw and adjust the length that this rod sticks out and then tighten the screw again.