Michael Shaw
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Trunked radio systems allow an agency to use
a small number of frequencies to permit a large
number of transmissions, hence saving money.
Trunked radio systems also have repeaters,
making them easy to follow for units with
correctly programmed radios.
Without correctly programmed radios,
following the transmissions of a trunked radio
system is impossible, as the frequency is
constantly changing.
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Trunked radio systems work by giving users a
talkgroup ID. This ID allows them to transmit
on any frequency in the frequency bank.
For example, the Highway Patrol division
would use ID 6531, and the Sheriff’s Office
would use 4986. When the user of either
division keyed up on the radio, the system
would assign that ID to a temporary frequency.
Since the frequencies are always changing, it
requires a smaller amount of frequencies and
saves departments money.
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For more information about trunked radio
systems, please click here.