The CB radio can reach up to 4 or 5 miles, depending on the weather and type of terrain in the area. This is called "SHORT SKIP" but during good propagation the signal may travel far and this is known as "LONG SKIP". Band opening may varies from few minutes to hours.
The CB radio service is distinct from FRS or Amateur ("HAM") radio. In many countries, CB does not require a license and, unlike Amateur Radio, it may be used for business as well as personal communications. Like many other two-way radio services, Citizens' Band channels are shared by many users. Only one station may transmit at a time. Other stations must listen and wait for the shared channel to be available. Several countries have created similar radio services, with varying requirements for licensing and differing technical standards. In Malaysia CB are allocated on 27 MHZ and 477 MHZ. Any persons who wish to operates CB Radio must get the Typed Approved model.