UNDERSTANDING
BANKS
Channel Storage Banks
To make it easier to identify and select the channels you want to listen to, channels are divided into 10 banks of 30 channels each. Use each channel- storage bank to group frequencies, such as those used by the police de- partment, fire department, ambulance services, or aircraft (see “Guide to the Action Bands” on Page 39). For exam- ple, the police department might use four frequencies, one for each side of town. You could program the police frequencies starting with Channel 1 (the first channel in bank 1) and pro- gram the fire department frequencies starting with Channel 31 (the first channel in bank 2).
Service Banks
The scanner is preprogrammed with the frequencies allocated by public safety, police, fire/emergency, aircraft, and weather services. This is handy for quickly finding active frequencies instead of searching through an entire band (see “Searching Service Banks” on Page 18).
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UNDERSTANDING
TRUNKING
In the past, groups that broadcast fre- quently, such as police departments, were restricted to transmitting on just a few frequencies. This resulted in heavy traffic and often required
Trunked systems allow more groups of
acode that identifies that
You can set this scanner to monitor the data channel frequency, so you can hear both the call and response transmissions for that