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Glossary
Attenuator
Reduces interference due to intermodulation.
Channel (object)
A frequency or talkgroup and its associated information.
CTCSS/DCS
Continuous Tone-Coded Squelch System/Digital Coded
Squelch System, a squelch control system which reduces
interference when using the same frequency.
FIPS
Federal Information Processing Standard. A code used to
identify geographic locations for SAME weather alerts.
Intermodulation
Occurs when two or more strong signals mix, generating a
false frequency and distorted sound.
Monitor
Rather than scanning frequencies, to monitor is to keep the
scanner tuned to a single frequency, waiting for a transmission.
Playlist
A customized set of channels that can be managed as a group.
Priority
Identifies a particular frequency whose transmissions should
not be missed while scanning other frequencies.
SAME
Specific Area Message Encoding system. NOAA broadcasts
alerts corresponding to specified areas.
Scan
Search to find an active frequency through channels.
Scanner
Wide band radio receiver that can receive Aircraft, CB, Fire,
FRS, HAM, Military, Public Safety, Railroad, Weather broadcast,
etc.
Search
Search an active frequency though frequency bands.
Signal Stalker ll
Powerful tool for rapidly finding a nearby signal.
Site
A set of control frequencies for a trunked system’s service area.
You must select at least one site to import talkgroups.
Skip
Skips over specified frequencies or channels.
Squelch
Increases or decreases the scanner’s ability to receiving signals.
Step Size
Incremental frequency size, determined by FCC.
Skywarn
Network of radio repeater frequencies for severe weather
information.
Talkgroup
A group of users who share a small number for frequencies in
a trunked radio system.
Trunked Radio
System
System developed to use radio spectrum efficiently. Trunked
radio systems all multiple users to share a small number of
frequencies.
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