I use a Garmin RINO 110. I absolutley love it. It is a GPS with a built in radio. The thing that I love most about it is that if someone else within 2 miles from me is using one, we can beam our location to each other. There is about 6 of us that hunt together taht use them, and you can always know where the other 5 guys are on the mountain. It is great. I highly recommend it.