Sources
Help build the largest human-edited directory on the web.
Submit a site - Become an editor
Wikipedia. Licensed under the GNU Free Documentation License.
Are you an expert in this subject? Join the discussion and share your knowledge at Wikipedia.org.
Multi-Use Radio Service
From Wikipedia, the free encyclopedia
The Multi-Use Radio Service (MURS) is a small two-way radio service consisting of five frequencies in the VHF spectrum. Established by the U.S. Federal Communications Commission in the fall of 2000, MURS created a radio service allowing for unlicensed operation, with a power limit of 2 watts, four times that of FRS radio. In the fall of 2002, the FCC further amended the MURS rules; these rule modifications included changing the 2 watt transmitter power limitation to be based on Transmitter Power Output (TPO), rather than Effective Radiated Power (ERP), so there is no longer an ERP limit with MURS, and external gain antennas may be utilized. The FCC formally defines MURS as "a private, two-way, short-distance voice or data communications service for personal or business activities of the general public."
MURS comprises the following five frequencies
- 151.820 MHz
- 151.880 MHz
- 151.940 MHz
- 154.570 MHz (also part of the business band)
- 154.600 MHz (also part of the business band)
Amateur and hobbyist
Amateur radio • Amateur radio repeater • Citizens' band radio • Family Radio Service
General Mobile Radio Service • Mobile rig • Multi-Use Radio Service • PMR446 • UHF CB (Australia)
Aviation (aeronautical mobile)
Air traffic control • Aircraft emergency frequency • Airband • Mandatory frequency airport • Single Frequency Approach • UNICOM
Land-based commercial and government mobile
Business band • Base station • Mobile radio • Professional Mobile Radio • Radio repeater • Specialized Mobile Radio • Trunked radio system • Walkie talkie
Marine (shipboard)
2182 kHz • Coast radio station • Marine VHF radio • Maritime mobile amateur radio
Signaling / Selective calling
CTCSS • Dual-tone multi-frequency • D-STAR • MDC-1200 • Push to talk • Quik Call I • Selcall
System elements and principles
Antenna • Audio level compression • Call sign • DC remote • Fade margin • Link budget • Rayleigh fading • Tone remote • Voice procedure • Voting (diversity combining)