Chip Howell 5 out of 5 09.28.2017 at 9:11 pm Im still in the learning stages, I have had my Alpha 100 for just a couple of months now. I put the extended antenna on, hung my mini T15 collar in a bush, then drove, after more than 5.5 miles I gave up. I still had plenty of signal. I figure if my little Beagle chases a rabbit that far from me I’ll be hard pressed to catch up. (time for a four wheeler) FANTASTIC!