Beginning Tuesday, agencies in Marion County will be making the switch from wideband to narrowband radio signals. With the exception of Pella, whose public safety agencies will make the switch on Thursday, all area fire and EMS agency signals will move to narrowband Tuesday, and all law enforcement agencies will switch on Wednesday. Emergency Management Coordinator Jeff Anderson says the only significant change for those who own scanners will be a small possible decrease in volume level, and no programming change will need to be made. The purpose of the switch is to comply with the Federal Communications Directive for narrowbanding all signals by 2013. Marion County received a $1.5 million grant for the narrowbanding, through the Iowa Statewide Interoperable Service Board’s Public Safety grant program. For more information on the narrowbanding process tune in to today’s In Depth program where Dr. Bob Leonard will speak with Emergency Management Coordinator, Jeff Anderson.