Radio Shack PRO-652 User Manual page 14

Understanding your Scanner
that you select. Your scanner can check your local NOAA weather
frequency periodically, even while scanning, and alert you when an
All Hazards alert occurs.
Multi-System Trunking – Scans most common trunked radio system
signaling formats, including Motorola, EDACS, LTR and P25 trunked
radio networks. Both talkgroup and individual call monitoring are
supported.
Automatic Adaptive Digital Tracking – When monitoring P25 digital
systems, instantly adapts the digital decoder to the digital modulation
format of the transmitted signal, then analyzes the signal over 50 times
each second and adapts to any subtle changes caused by multipath or
fading. No cumbersome manual adjustments are required.
Digital AGC – Instantly compensates for low user audio levels that
are common on digital systems.
LTR Home Repeater AutoMove – Takes the guesswork out of
programming LTR trunking systems when the home repeater order is
not known. Enter the LTR system frequencies in any order, and the
PRO-652 will automatically move the frequencies to the proper home
repeater slots as transmissions are received on the system.
Subaudible Squelch Decoder – CTCSS and DCS subaudible
squelch coding is processed by the same powerful DSP chip that is
used for P25 digital decoding. Provides fast and reliable decoding of
subaudible squelch signaling with squelch tail elimination.
Signal Stalker II – Quickly sweeps the scanner's frequency ranges for
transmissions from nearby sources.
P25 NAC Functionality – P25 Network Access Code (NAC) is used
to provide selective squelch operation on conventional digital
channels. Your PRO-652 will detect the NAC that is being used on
a P25 conventional digital channel, and allow you to program NAC
codes to block transmissions that do not have a matching NAC,
including analog traffic on the same frequency.
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