Technical Service Department
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of the City of
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A Division of Public Safety
Trunked 800MHZ Radio System
The City uses a trunked radio system operating on seven repeaters in the 800MHZ band for all of it's radio commmunicatons. The difference
between a trunked radio system and the conventional radio system previously used by the
City is in how the frequencies are utilized. In a trunked system, frequencies or
"channels" are not assigned to individual departments or services. One channel is used
for digital control of the system. The remaining pool of repeaters are shared amoung the
users as needed. Therefore, a conversation may start on one frequency and end on a
different one. The control channel "tells" the radios when to change frequency in order
to follow a particular conversation . Each channel is a repeater. A repeater
receives a low power signal from a radio in the field on one frequency, amplifies it and
rebroadcasts it on a different frequency. This allows a low power radio to "talk to" a
large area.
The City also utilizes 800MHZ for Mobile Data Terminals (Computers in Police cars)
Phone:330.971.8020
FAX:330.971.8019
If you have comments or suggestions, email me at
imsys@worldnet.att.net