Trunked Radio System Explained

Trunked radio systems in depth.

Trunked radio system explained.

But as soon as the number of groups or the number of users working on a system increases trunking may be a better option. Trunking uses channels much more effectively than conventional systems where a channel is required for each group. When a trunked radio user wishes. If they know the groups that will communicate together a conventional system is a good choice.

In the basic radio awareness course we introduced the basic principles of trunking. A trunked radio system is a digital two way radio system that uses a digital control channel to automatically assign frequency channels to groups of users. A trunked radio system is a specialized repeater system with one or more towers and multiple frequencies which allows channelized semi private conversations between many more groups of users than it actually has allocated rf channels. In a traditional half duplex land mobile radio system a group of users a talkgroup with portable two way radios communicate over a single shared radio channel with one user at a time talking.

These systems typically have access to. Project 25 p25 or apco 25 is a suite of standards for digital mobile radio communications designed for use by public safety organizations in north america p25 radios are a direct replacement for analog uhf typically fm radios but add the ability to transfer data as well as voice allowing for more natural implementations of encryption and text messaging. When a user say an officer or sergeant in the field wants to send a message the system assigns them to an available channel decreasing the likelihood that they ll have to wait for a free channel to. Trunked radio systems centrally manage a pool of channels and intelligently switch users to whatever channel is open at a given time.

All trunked radios operate in a similar manner although the type of trunking technology used by each type of trunked radio system differs greatly. Trunked radio might be better called computer controlled or computer aided radio. This is an example of statistical multiplexing. There are many different implementations of trunked business and public safety radio using different trunking.

In the trunked radio environment each agency is assigned one or more talkgroups that the agency s communications will use. This is often a difficult concept for scanner enthusiasts to understand as trunking represents a paradigm shift in design of the system. Unlike conventional radio a pool of channels is available for communication that are allocated for groups on the network. All agencies on the system will have different talkgroups but all will.