GME TX6500S - Manual (Page 28)

2 8 I N S T R U C T I O N M A N UA L T X 6 5 0 0 S
GROUP CALLING
The TX6500S’s SelCall system includes a Group Call function which allows you to call up to 10
radios simultaneously. This can be useful in an emergency situation where you may need to transmit
a message to a number of radios in your group. To achieve this, the radios you are calling must be
programmed with sequentially numbered SelCall Idents where the fi rst 4 digits are the same on each radio.
e.g. 12340, 12341, 12342, 12343, --> 12349
The Group Call function works by allowing you to enter a special ‘group code’ into the last digit
position of the SelCall Ident you are sending. The ‘group code’ appears as an ‘A’ when displayed in the
radio. When this ‘group code’ is received, it substitutes for any other number in the last digit position.
As long as the fi rst 4 digits of the SelCall you are sending match those of the radios you are calling,
their SelCall alarm will be activated as if their full 5 digit SelCall Idents had been received.
e.g. Group call to Ident
e.g. • Transmitting the SelCall Ident 12341 will only activate the alarm in the radio with the SelCall
Ident of 12341.
• Transmitting 1234A will activate the alarms in all radios with Idents 12340 through 12349
(a total of 10 radios).
If the radios in your fl eet do not have sequentially numbered SelCall Idents you may be able to
reprogram them yourself. Most recent GME radios have this feature (including your TX6500S). If your
radios do not allow you to change the SelCall Idents you may need to arrange for your dealer to
re-program them for you.
Programming and sending Group calls
The process for entering a Group call Ident is the same as entering a normal SelCall Ident.
1. Press the key. is displayed, along with the SelCall Ident that was last sent or received.
If the radio is in the ALPHA mode, briefl y press the Squelch key to return to the Ident display.
2. Enter the required SelCall Ident as follows:
a. Hold the key until a beep is heard. The right hand digit of the SelCall Ident will fl ash.
b. Press the or keys to select ‘A’ in the right hand fl ashing digit position.
This is the special code that will create the Group Call.
c. Briefl y press the key again to select the next digit position
d. Press the or keys to select the required number in next the fl ashing digit position.
e. Repeat steps (c) and (d) to enter all 5 digits as required. When completed, the fi rst 4 digits of the
Ident you have entered will match all the radios in the group and the last digit will be set to ‘A’.
3. Once the Ident has been entered you have 5 seconds to send it otherwise the mode will be
cancelled and the Ident you entered will be lost. Press and hold the key until the icon
appears. The SelCall will be sent.
Call acknowledge in Group mode
There is no call acknowledge after sending group calls. This is to prevent all the radios in your group
from trying to respond at the same time.
45315-1_TX6500s_IM.indd 28 11/09/13 4:34 PM