Common Frequencies

Canada

• Low Power Units
• Television and Motion Picture Production

NATO

• NATO Common Channels

United States

• Aircraft
• Amateur Radio
• Broadcast
  • AM / FCC AM Query
  • FM / FCC FM Query
  • TV / FCC TV Query
• Charter Buses
• Common Itinerant and Business
• Common Public Safety
• Cordless Microphones
• Cordless Phone
• EMS
• Marine
• Personal Radio Services
  • Citizens Band (CB)
  • Family Radio Service (FRS)
  • General Mobile Radio Service (GMRS)
    • FRS/GMRS combined channel chart
  • Multi-Use Radio Service (MURS)
• Railroad
• Sports
• Television and Motion Picture Production

Federal Government

Department of Commerce

• NOAA Weather Radio

Department of Homeland Security

• Civil Air Patrol
• Customs and Border Protection
• Immigration and Customs Enforcement
• Federal Protective Service
• Transportation Security Administration
• United States Coast Guard
• United States Secret Service

Department of Justice

• Drug Enforcement Administration
• United States Marshals Service

Department of State

• Diplomatic Security Service

Department of Transportation

• Federal Aviation Administration

Independent Agencies

• National Transportation Safety Board

Multiple Agencies/Interoperability

• Federal Government Itinerant
• Federal/Non-Federal Interoperability
• National Incident Radio Support Cache

Miscellaneous

• FCC General Menu Reports
• FCC Universal Licensing System - License Search
• FCC Universal Licensing System - Application Search
• FCC Antenna Structure Registration
• FCC Emission Designators
• FCC Radio Service Codes
• FCC Station Class Codes
• FCC Online Frequency Allocation Table (800k .PDF document)
• FCC Radio Spectrum Home Page
• NTIA Manual of Regulations and Procedures for Federal Radio Frequency Management (Redbook)
• NTIA US Frequency Allocation Chart
• Code of Federal Regulations Title 47 Telecommunication Contains the FCC Rules
• Midian Electronics tone signaling chart Has tone frequencies for various paging formats, CTCSS, CDCSS codes, etc.