I just bought my x50 about 4 days ago from Best Buy. My cousin had a 3 year old Beltronics v985 and we were sitting in his driveway with both radar detectors on. Suddeny his detetor started picking up a slight x band signal. there were no possible threats around and just to make sure i turned my x50 off and sure enough his v985 stopped picking up the x-band. oddly enough my x50 wasn't picking up anything from his. I was wondering if this is normal or if i could possibly have a defective unit?