I agree with "Burger" - PLEASE keep your dog on a leash best you can (as good trail etiquette requires). You shouldn't have any worries. IN ADDITION - I have helped rescue several hunting dogs off the trail in my day - the GPS collars work and you can see them on a handheld device. They are costly and the range is limited (and as with radios) VERY limited in the mountains.

Kudos for being responsible by tagging your dog well and microchipping as well.

I just adopted a dog a few weeks ago that was obviously someones loved one - but alas - no chip. If he had one - I (like most of the great folks on the AT) would have gotten him home!

Happy Trails !