Radio Shack PRO-83 - Manual (Page 24)

The Basics 24
Understanding Banks
Service Banks
The scanner is preprogrammed with all the
frequencies allocated to the weather, ham, marine,
aircraft, and police (fire/emergency) services.
Channel Storage Banks
To make it easier to identify and select the channels
you want to listen to, the 200 channels are divided
into 10 channel-storage banks. Each bank has 20
channels. Use each channel-storage bank to group
frequencies, such as those for the police
department, fire department, ambulance services,
or aircraft.
For example, the police department might use four
frequencies in your town while the fire department
uses an additional four. You could program the four
police frequencies starting with Channel 1 (the first
channel in bank 1), and program the fire department
frequencies starting with Channel 21 (the first
channel in bank 2).