Start my brisket at 6:30 (28* and very dark out) inserted the Mav probes, did the registration thing, every thing is OK. Smoker is in doorway of metal shed. Go inside and after a few minutes the reciever beeps, lost the signal. Go outside, do the registration thing again, back inside, maybe 10 min pass and it beeps again. Reciever is in my home not more than 100 ft from the smoker. Secound time I've used it. Anybody have any help?