Radio Shack 20-521 owner manual Special Features, Trunk Tracking, General Guide to Scanning

Special Features	34
Delay	34
Turning Channel-Storage Banks On and Off ...	34
Locking Out Channels	35
Priority	35
Using the Keylock	37
Using the Display Backlight	37
Changing Search Speeds	37
Turning the Key Tone Off/On	38
Turning the Battery Save Function Off/On	38
Skipping Data Signals	39
Trunk Tracking	40
Types of Trunking Systems	40
Setting the Scanner to the
Trunk Tracking Mode	41
Setting Squelch for the Trunk Tracking Mode ..	42
Storing Trunked Frequencies	42
Scanning a Trunked Bank	44
Monitoring an Active ID	45
Temporarily Storing an ID into the
Monitor ID Memory	45
Locking Out IDs	46
Unlocking a Single ID	46
Unlocking All IDs	46
Using Trunk Tracking Scan Delay	47
Monitoring IDs	47
Channel Activity Bars	48
Scan Lists	49
Manually Storing IDs into Scan Lists	49
Moving IDs to Scan Lists	50
Deleting a Stored ID	50
Scanning the Scan Lists	51
Scanning Type I and Hybrid Trunked
Systems	51
Selecting a Preset Fleet Map	55
Programming a Fleet Map	56
Programming a Hybrid System	57
A General Guide to Scanning	58
Guide to Frequencies	58
National Weather Frequencies	58
Canadian Weather Frequencies	58
Birdie Frequencies	58
Guide to the Action Bands	59
Typical Band Usage	59
Primary Usage	59
Band Allocation	60

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