Radio Shack PRO-99 Owner's Manual page 4

Triple Conversion
Superheterodyne Receiver —
Eliminates interference from
intermediate frequency (IF)
images, so you hear only the
frequency you select.
TM
HyperSearch and
TM
HyperScan — Set the scanner
to search at up to 62 steps per
second and scan at up to 50
channels per second, to quickly
find interesting transmissions.
CTCSS Continuous Tone Code
Squelch Service — Restricts
channel reception to
transmissions using specified
subaudible CTCSS tone when
scanning or parked on a single
channel.
Duplicate Frequency Check —
Automatically notifies you if you
are about to store a frequency you
have already stored in the same
bank, to help avoid wasting
storage space.
Priority Channel — Designate a
frequency to scan every two
seconds so you do not miss
important calls.
Weather Band — Scans seven
preprogrammed weather
frequencies to keep you informed
about current weather conditions.
Weather Alert — Automatically
sounds the alarm tone to advise of
hazardous weather conditions
when it detects the alert signal on
the local NOAA weather channel.
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