GMRS Help What is it

General Mobile Radio Service (GMRS)

The General Mobile Radio Service (GMRS) is a licensed radio service regulated by the Federal Communications Commission (FCC). Here are some key points about GMRS:

1. Frequency Range:
   • GMRS operates on channels around 462 MHz and 467 MHz.
   • These frequencies are commonly used for short-distance, two-way voice communications using handheld radios, mobile radios, and repeater systems.
2. Communication Devices:
   • GMRS allows communication through various devices, including:
     • Handheld Radios: Portable devices for personal use.
     • Mobile Radios: Installed in vehicles or fixed locations.
     • Repeater Systems: Used to extend the range of communication.
3. Expanded Functionality:
   • In 2017, the FCC expanded GMRS to allow additional features:
     • Short Data Messaging: Including text messaging.
     • GPS Location Information: Enhancing safety and coordination.
   • Similar services include the Citizens Band Radio Service (CBRS), Family Radio Service (FRS), and Multi-Use Radio Service (MURS).
4. Licensing:
   • An FCC license is required to operate a GMRS system.
   • Licenses are issued for a ten-year term and can be renewed.
   • Eligibility for new GMRS system licenses is limited to individuals.
   • Previously licensed non-individual systems can continue using GMRS.
5. Channels and Bandwidth:
   • There are 30 GMRS channels with a bandwidth of 25 kHz (20 kHz authorized bandwidth) or 12.5 kHz.
   • Channels are used for voice-only or voice and data operations.
   • Cooperation in channel selection ensures effective use and reduces interference.
6. Operating Rules:
   • GMRS license holders can use a combination of portable, mobile, fixed, and repeater stations.
   • No channel is exclusively assigned to any system.
   • Family members, regardless of age, can operate GMRS stations within the licensed system.