Radio Shack 20-521 Scanner User Manual


 
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Five Channel-Storage Banks — you can store up to
30 channels in each of 5 different banks to group chan-
nels so you can more easily identify calls.
Five Scan Lists — you can store up to 50 trunking IDs
in each trunk tracking bank.
Two-Second Scan Delay — delays scanning for about
2 seconds before moving to another channel, so you
can hear more replies that are made on the same chan-
nel.
Lock-Out Function — lets you set your scanner to skip
over specified channels or frequencies when scanning
or searching, and skip over IDs when tracking trunked
systems.
Priority Channels — lets you program one channel in
each bank (5 in all) and then have the scanner check
that channel every 2 seconds while it scans the bank,
so you don't miss transmissions on those channels.
Five Service Banks — frequencies are preset in sepa-
rate police (fire/emergency), aircraft, ham, marine, and
weather banks, to make it easy to locate specific types
of calls.
Hypersearch— lets you set the scanner to search at
up to 300 steps per second. The normal search speed
is 100 steps per second.
Hyperscan— the scanner automatically scans up to
50 channels per second in frequency bands with 5 kHz
steps, to help you quickly find interesting broadcasts.
Key Lock — lets you lock the scanner's keys to help
prevent accidental changes to the scanner's program-
ming.
Data Signal Skip — lets you set the scanner to skip
non-modulated or data signals (such as fax or modem
transmissions) during searches. This lets the scanner
avoid non-voice signals, making a search faster.
Manual Access — lets you directly access any channel.
Liquid-Crystal Display — makes it easy to view and
change programming information.
Display Backlight — makes the scanner easy to read
in low-light situations.