The services codes for Betty Bearcat -- The Electronic Frequency Directory
are as follows:

Police Departments                           PP
Fire Departments                             PF
Public Safety Services                       PS
Local Government Agencies                    PL
Forestry Conservation Radio Service          PO
Marine Radio Service                         MC
Mobile Telephones (Non-Cellular)             CD
Aircraft -- Including Airports               AF
Amateur Radio Repeaters                      AM
Federal Government (Not in all states yet)   US
Railroads                                    LR
News Media (TV, Radio & Newspapers)          NM