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Multi Use Radio Service (MURS)The Official FCC Rules and Regulations for Multi Use Radio Service |
In the Memorandum Opinion and Order and Second Report and Order (pdf) released May 23, 2002, the Commission updated the service rules regarding five Industrial/Business Pool VHF frequencies known in the PLMR community as the VHF “color dot” frequencies. These frequencies were moved from Part 90 to Part 95 and became a new Citizens Band Radio Service (CB) named the Multi-Use Radio Service (MURS). The Commission defines MURS as a private, two-way, short-distance voice or data communications service for personal or business activities of the general public.
Summary of MURS operations rules
Station Identification A MURS station is not required to
transmit a station identification announcement.
Channel Use
The channels authorized to MURS systems are available on a
shared basis only and will not be assigned for the exclusive use
of any entity. Those using MURS transmitters must cooperate in
the selection and use of channels in order to reduce
interference and make the most effective use of authorized
facilities. Channels must be selected in an effort to avoid
interference to other MURS transmissions.
Authorized Locations
MURS operation is authorized anywhere a CB station is
authorized:
MURS operation is NOT authorized aboard aircraft in flight.
Permissible Communications
- MURS stations may transmit voice or data signals as permitted in 47 CFR 95.631(j)
- A MURS station may transmit any emission type listed in 47 CFR 95.631(j)
- MURS frequencies may be used for remote control and telemetering functions.
- MURS transmitters may not be operated in the continuous carrier transmit mode.
- MURS users shall take reasonable precautions to avoid causing harmful interference. This includes monitoring the transmitting frequency for communications in progress and such other measures as may be necessary to minimize the potential for causing interference.
Operating Restrictions
MURS stations are prohibited from operating as a repeater
station or as a signal booster. This prohibition includes
store-and-forward packet operation.
MURS stations are prohibited from interconnection with the
public switched network. Interconnection Defined. Connection
through automatic or manual means of multi-use radio stations
with the facilities of the public switched telephone network to
permit the transmission of messages or signals between points in
the wireline or radio network of a public telephone company and
persons served by multi-use radio stations. Wireline or radio
circuits or links furnished by common carriers, which are used
by licensees or other authorized persons for transmitter control
(including dial-up transmitter control circuits) or as an
integral part of an authorized, private, internal system of
communication or as an integral part of dispatch point circuits
in a multi-use radio station are not considered to be
interconnection for purposes of this subpart.
The highest point of any MURS antenna must no be more than 60
feet above the ground or 20 feet above the highest point of the
structure on which it is mounted.
