up here looking for him, got the laptop drivig about in the truck, our heads were minced when we left for tourches ect but we never blocked the holes and nobody was with him dont ask me why am gutted,so this is the thing we got it down to 3.1m then just before we left the best reading we were getting was 2.5 and that was him moving about because we were making very little progress and the dog was vocal if you shouted him, would the b&f collar switch off by itself has anyone ever had this happen to them, so when i got back i couldnt hear him and ther was no reading so i f****d up and dont k