Garmin Alpha 100 + TT15The Best VHF Tracking System on the Market! Easily locate all your hunting dogs after a hunt with the Garmin Alpha 100 + TT15 pack the most powerful VHF tracking kit on the market! Known for its unmatched reliability and durability even in the most extreme hunting and outdoor conditions, this GPS kit helps you stay connected with your pack. With no subscription required, the VHF technology allows you to track your hunting dogs without relying on a GSM