I've some brand x thermometer RF receiver with three channels. It picks up three temperature reading from somewhere in the neighborhood. The temperatures are close to what one would expect. I don't know where any of the transmitter are located, just somewhere in the neighborhood.

This morning I got the expected temperatures near 30F on channels two and three but channel one reported 13F. Could someone have moved their transmitter to their freezer and it still transmit? Can a transmitter go bezerk? There is a mountain about 12 miles away. The transmitter will not transmit that far will it?