User Manual

PSR-410 O/Manual
out in it
s entirety every time it was necessary to show it in the display.)
You should take a moment and become familiar with these abbreviations now. For consistency, the same
abbreviations for the different object types are used in the radio and here in the manual.
TGRP
TGRP is used to represent a Trunking Talkgroup Object. Trunking Talkgroups are “virtual” channels that
exist on a trunked radio system. A trunked radio system is a radio system where a small group of radio
channels are automatically shared between a larger number of users and user groups. This sharing of
channels is managed automatically by a special computer, called a controller, or by other specialized
hardware. For now, all you need to know is this; if you want to monitor a talkgroup on a trunked radio
system, you must store that talkgroup's parameters in a TGRP object.
TSYS
TSYS is used to represent a 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 on the same
trunked radio system, 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.
CONV
CONV is used to represent a Conventional Channel Object. A Conventional Channel Object is a regular,
non-trunked frequency used for radio communications. CONV objects are used to store the parameters for
any radio channel that is not a part of a trunked system. For example, if you want to monitor specific VHF
marine channels, they should be programmed as CONV objects. If you want to monitor your favorite
amateur radio channel, it should be stored as a CONV object. If your police or fire department uses a
channel, or channels that are not trunked, but part of a “plain old radio system”, they should be stored as
CONV objects.
LMIT
LMIT is used to represent a Search Range, or Limit Search Object. LMIT objects contain the parameters
necessary for the radio to search a range of individual frequencies between a lower and upper limit
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