I'm a new ERBE owner (2 months) and have noticed the range that I get is nowhere near what it used to be. I just put new batteries in thinking the old ones were dying but that didn't fix it. I probably get 120 feet of range compared to the approximately 400 feet or so that it went when I first got the ERBE. Do I need certain batteries ie. lithium or do you think it could be a problem with the antenna inside the transmitter? I do know that the plastic antenna came off the top of the transmitter once when I bumped it but I just stuck it back on. When I did this I saw that there was a wire that went inside the transmitter unit. Does anyone know where the black wire leads to and if it could be the issue?