Radio Shack ADV0801 Owner's Manual page 17

ADV0801 Owner's Manual Draft
Talkgroup Object (TGRP)
A Trunking Talkgroup Object (TGRP) is a record that stores the parameters for a trunked
talkgroup on a trunked radio system. When you create a TGRP object, you are creating an
object that will allow you to scan and monitor a talkgroup on a particular trunked radio system.
Essential Trunking Talkgroup parameters
As a standalone object, a TRGP object is really no more complicated than a CONV object. The
trunking system (TSYS) that the TGRP is a member of must be specified. Each talkgroup has a
digital "address" on the trunking system, which is called the talkgroup ID, and this must be
provided. We also recommend that you label your TGRP object by giving it a name in the TAG
field. This will make it easier for you to find the TGRP object later, and identify it when the
scanner stops to monitor activity.
Setting up and using a Trunking System (TSYS) object
We just mentioned that the TSYS is an essential parameter needed in order for a TGRP object
to function properly and receive radio traffic. The TSYS object has its own set of essential
parameters, and these parameters vary depending on the type of trunked radio system you plan
to monitor. If you are a reasonably experienced user you probably already know what the
essential parameters are for the system you wish to monitor. For example, each TSYS must
correctly specify the type of system being monitored, the control channel or LCN frequencies
used by the system, and so on. A detailed description of each type of system supported by this
radio and the essential parameters required to make the different types of trunked radio
systems work properly is provided in the Detailed Menu Reference. So, if all of this makes sense
to you then you should proceed and enter the required data for the system you wish to monitor
to make a new TSYS as you create your TGRP. If not, please refer to the TGRP section of the
Detailed Menu Reference so that you will understand which TSYS parameters are required for
the type of trunked radio system you wish to monitor.
The first time you make a TGRP for a particular trunked radio system, you must also create a
TSYS that contains the system parameters associated with that trunked radio system. Once you
create a TSYS object for the trunked radio system, you can use the TSYS object over and over
again without having to re-enter all of the system data.
Assuming that you have already entered one or more CONV objects (which we recommend you
do prior to attempting the entry of the slightly more complicated TGRP object), you should press
the PGM key to place your scanner into Program Mode, then press the NEW softkey, then press
the TGRP softkey.
In the same way as with the CONV object, this menu of TGRP parameters can be scrolled up
and down to access and enter or change the various parameters associated with a trunking
talkgroup.
For the purpose of this example, we will assume that you wish to create a TGRP object for a
Motorola Type II 800 MHz trunked radio system, which is one of the more common types of
trunked radio systems in use. (If this is not the case, we encourage you to refer to the Detailed
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