From The RadioReference Wiki
- Sheriff unit identifying as number 78-xx indicates the unit is from POTTAWATTAMIE county, since POTTAWATTAMIE county number is 78.
- The Iowa Counties page lists all county numbers.
Iowa - EMS(Statewide)
155.340 is used state wide, refered to as "HEAR", "STATE EMS", or "340". 155.280 is designated as a hospital to hospital frequency, paging can also be heard on the frequency.
Here is a map of EMS Communication Plan for Iowa, each frequency is referred to as "Regional EMS":
Here is a spreadsheet of all Iowa hospitals with frequency and assigned PL: