I bought 5 Bcd436Hp units for members of my dept. This was in Feb and gave to members in March. I noticed one member had his in office and I asked why and he said he was not receiving any reception. I thought it was weird but chalked it up to him not programming it correctly. 3 days later my reception went to zero. No changes in settings. Just all of a sudden goes from time out working, Baltimore co fire and pd working to nothing. I searched threads but found nothing like my case. Any and all help appreciated.