Guthrie police and fire close to making the switch

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The final touches are being made at the Guthrie Police Department and Fire Department and soon they will be operating with upgraded technology.

This is just one of the new 800 mhz radios being installed in police, fire and ambulance units in Guthrie. Photo By Chris Evans

The departments will be moving over to the 800 MHz trunked radio system allowing officers and firefighters to instantly communicate with each other and officers from other agencies.

The Guthrie city council approved a $500,ooo-plus grant from Homeland Security last August.

Besides making greater use of an increasingly limited radio spectrum, trunked radio systems generally permit a larger number of users than a conventional system.

The Logan County Sheriff Department implemented the system in 2011.

The key to this capability is the ability of a trunked radio system to use a pool of frequencies for any of the system’s users. When an officer wants to transmit, a trunked system simply looks at which frequency is unused and quickly assigns it to the officer for the duration of the transmission. Since field units infrequently transmit at the same time and most public safety transmissions are relatively short, frequency sharing can create more on-air time.

Another advantage of trunked systems is their flexibility. They’re controlled entirely by computer, so it’s easy to set up complex channel assignments, and to reconfigure the system as needed without the services of a technician. Police or fire departments can quickly “create” an additional channel to handle a hostage situation or major fire, or change channel assignments to allow public works or other city agencies to communicate on the police/fire channel during natural disasters.

In contrast, a conventional system limits each user to just their assigned frequency. If the police channel is busy, officers just have to wait their turn, even though the fire or public works channel is going unused at the moment. And in most systems, channel assignments can’t be easily reconfigured or shared with other city agencies.

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