MURS Radio & Intersitial Business Frequencies

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Multi-Use Radio Service (MURS)

The Multi-Use Radio Service, or MURS, is a low power, short range, unlicensed personal radio service in the 150 MHz band. MURS is intended forshort-range local voice or data communications. Antenna height is limited to 20 ft. above structure or 60 ft. above ground, whichever is greater. Very narrow bandwith transmissions (max. 11.25 kHz channel bandwith, with a+/- 2.5 kHz deviation is permitted on all 5 MURS channels. The FCC MURS rules permit up to 2W of transmitter power for simplex voice/data communications in personal and business applications. External gain antennas are allowed, so it is possible to create quite efficient mobile and base stations.
Administered under the FCC's Personal Radio Seervices, some people use this band as a VHF Citizens Band service, you do not need an FCC license to operate a MURS station.  Some interesting transmissions can be heard here.  Data transmissions are also allowed, permitting packet, PSK31 & FLdigi modes.  The Multi-Use Radio Service (MURS) dates back to 2002 when the FCC changed the service rules for five industrial/business frequencies known as the “color dot” frequencies from Part 90 to Part 95 of the FCC rules.

Licensing

The Multi-Use Radio Service (MURS) is licensed by rule. This means an individual license is NOT required to operate a MURS device. You can operate a MURS device regardless of your age and for personal or business use so long as you are not a representative of a foreign government.The FCC service rules for the Multi-Use Radio Service (MURS) are located in 47 C.F.R. Part 95.

MURS Channels

There are five MURS channels and the channels are either 11.25 kHz or 20.00 kHz each.

Ch. 1 151.820 MHz (11.25 kHz)

Ch. 2 151.880 MHz (11.25 kHz)

Ch. 3 151.940 MHz (11.25 kHz)

Ch. 4 154.570 MHz (20.00 kHz)

Ch. 5 154.600 MHz (20.00 kHz)

 

Operating a Multi-Use Radio Service (MURS) Device:

You can operate a MURS device in any place where the FCC regulates radio communications. A MURS device must be certified by the FCC. A certified MURS device has an identifying label placed on it by the manufacturer.None of the MURS channels are assigned for the exclusive use of any system. You must cooperate in the selection and use of the channels in order to make the most effective use of them and to reduce the possibility of interference.The usual range of communications between MURS devices is less than a few miles; connecting the unit to an external antenna can extend the range to ten miles or more. You cannot make telephone calls with a MURS device.DATA comms are permitted, including Packet, RTTY, PSK31, FLdigi, etc.

LOW-POWER BUSINESS / INTERANT RADIO RECEPTION

These low power (2 watts maximum) frequencies are used for many purposes by numerous businesses and organizations. Many fast-food restaurants use these frequencies at their drive-in windows. In the 450-470 MHz band, the interstitial (.0125 offset) frequencies are low power.

Low Power Business Frequencies
30.84
33.14
35.02
42.98
43.04
154.570
154.600
467.750
467.775
467.800
467.825
467.850
467.875
467.900
467.925

Itinerant Business Frequencies
27.49
35.04
151.505
151.625
158.400
451.800
464.500
464.550