Mobile Radio
The mobile radio is a two-way communication gadget that operates through radio frequencies. As such, the channel of information and messages in a mobile radio is variable. Used to be known as radiophone, the earlier versions of the mobile radio, were one-way communication systems used for broadcast.
Contemporary mobile radio systems can have as much as a hundred channels and may be controlled by microprocessors. These types require the use of software to encode channels and operate their integrated functions. The mobile radio, also known as a two-way radio system, allows the exchange of messages only with other mobile radios through push-to-talk (PTT) functions. A mobile radio also features wireless transceivers, making mobile radios portable. Mobile radio systems may be used for communications in aircraft, ships, automobiles, and other vehicles. The power supply on which mobile radios run depend on the type of vehicle these are mounted on.
A mobile radio system is composed of a transceiver and microphone with a push-to-talk key. It has an antenna that links to the transceiver. Since most types of mobile radio are used in moving vehicles, where the surrounding noise can be loud, some mobile radio types come with an external speaker. Other models have headsets and microphones with noise-reduction capabilities.
How does a mobile radio work?
Most mobile radios operate on a single band of frequency. The radio transceiver contains transmit and receive frequencies. Very high frequency (VHF) and ultra high frequency (UHF) allow a mobile radio to operate on maximum coverage. This means that its average operating range is from 150 to 470 MHz.
To transmit a message, the PTT key must be pressed during talk-time to allow the voice message to be dispatched by the sending party. During this period, the sending party cannot hear or receive any incoming messages from the mobile radio. Once the PTT button is released, the sender may hear the response of the receiving party.
Why do you need a mobile radio?
The use of mobile radio in transportation, security, and general operations makes communication fast, efficient and safe. It allows control centers to monitor location of vehicles and dispatch announcements to several receivers simultaneously. Additionally, the range of its area coverage is very high and is not dependent on a cellular network, which may fluctuate during emergency situations.
Different types of mobile radio are portable and capable of withstanding shock and severe weather conditions. Most countries impose certain requirements on the manufacture, sale and use of two-radio systems. This helps ensure that the communication gadget functions according to standards and that its use does not interfere with other communication systems.
