Tuesday, August 25, 2009

Citizens Band Frequency

In Malaysia, Citizens' Band radios became legal when the Notification of Issuance Of Class Assignments by Communication and Multimedia Malaysia was published on 1 April 2000.

Under this class assignment, CB radio is classified as a "Personal Radio Service Device". The frequency band is HF, 26.9650 MHz to 27.4050 MHz (40 channels), power output is 4 watts for AM and FM and 12 watts PEP for SSB.

Channel 9 is reserved for emergencies, and channel 11 is a calling channel.

On UHF 477 MHz, Citizens' Band PRS radio devices are allowed 5 watts power output on FM on 39 assigned channels spaced at 12.5-kHz intervals between 477.0125 MHz and 477.4875 MHz.

Channel 9 is reserved for emergencies, and channel 11 for calling.

A short-range simplex radio communications service for recreational use is from 477.5250–477.9875 MHz FM mode with 38 channels and a power output of 500 mW.

A CB (citizens' band) radio or Personal Radio Service Device under Class Assignment does not need an individual license to operate in Malaysia if it adheres to the rules of the Warta Kerajaan Malaysia, Communication and Multimedia Act 1998 (Act 588), Notification of Issuance Of Class Assignment, P.U.(B)416 Jil. 48, No. 22(e) Personal Radio Service Device, 1 November 2004.[25]

On 1 April 2010 the MCMC (Malaysian Communications and Multimedia Commission) released a new Notification of Issuance of Class Assignment, the Communications and Multimedia Act 1998 Class Assignments No. 1 of 2010.

This includes a new UHF PMR 446 MHz allocation: an eight-channel analog Personal Mobile Radio 446 MHZ (Analog PMR446) with frequencies from 446.0025–446.09375 MHz (12.5 kHz spacing) FM with 0.5 watt power output, and 16 channels for Digital Personal Mobile Radio 446 MHz (Digital PMR 446).

Frequencies for Digital PMR 446 are from 446.103125–446.196875 MHz with 6.25 kHz channel spacing in 4FSK mode and a power output of 0.5 watt.[26] An unofficial citizens' band radio club in Malaysia is the "Malaysia Boleh Citizen Radio Group", known as "Mike Bravo" (Malaysia Boleh).[27]


Info taken from : Wikipedia

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