Radio Shack PRO-652 User Manual page 12

Understanding your Scanner
managed automatically by a special computer, called a controller, or
by other specialized hardware. If you want to monitor a talkgroup on
a trunked radio system, you must store that talkgroup's parameters in
a TGRP object.
TSYS – Trunking System Object
A TSYS is a special object type that is used when creating TGRP
objects. A trunking talkgroup must be associated with a specific
trunked radio system in order for it to operate. There are parameters
that are associated with trunking systems, such as the type of trunked
radio system technology used, the frequencies that the system uses
to broadcast control data, etc. Instead of entering these parameters
over and over again every time you create a new TGRP, you create
a TSYS object with all of the system parameters, then specify that
TSYS object for each TGRP you create on the same trunked radio
system. A TSYS cannot be scanned by itself and is not considered
a Scannable Object. It is a "configuration object" that can be used
over and over again when adding talkgroups for a specified trunked
radio system.
LMIT – Limit Search or Search Range Object
LMIT objects contain the parameters necessary for the radio to
search a range of individual frequencies between a lower and upper
limit frequency.
SRVC – Service Search Object
SRVC objects are further divided into Public Safety, Aircraft, Amateur,
CB, Marine, and FRS/GMRS/MURS/DOT. SRVC objects are similar
to LMIT objects, but are preprogrammed to search all frequencies
associated with the selected service.
STLK – Signal Stalker II Object
STLK objects contain the parameters necessary for the radio to
rapidly sweep a range of radio spectrum for strong signals from
nearby transmitters.
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