I currently monitor a Fleetnet Tower here in Ontario with my Uniden 996T Scanner which I have programmed to listen to the OPP, MTO,MOH,. I also monitor a conventional channel as well at the same time which is a OPP Repeater Channel. I have a good siginal for this Bell Fleetnet Tower and sometimes I can go for 12 to 24 hours and never hear anything off this Tower(OPP,MTO,MOH) and other times this things going off every few minutes or so, but I will hear during those times the Repeater Channel on the Conventional Channel. I was just wondering why this happens? and was wondering if anybody has been having the same things happen.