GME Electrophone TX4200 Series, Instruction Manual

Page: 15 / 33

Selcall Ident
Before anyone can call you using Selcall you
will need to give them your Selcall Ident
number. The Selcall Ident number is printed on
the label attached to the radio's rear panel. We
suggest you write this number on the inside
front cover of this manual in case the label is no
longer accessible after the radio is installed.
You can also view your Selcall Ident on the LCD
using the procedure described on page 12.
Transmitting a Selcall Ident
When your TX4200 transmits a Selcall signal, a
tone sequence is sent which consists of a
'Lead-in' tone, a 'Call To' Ident and a 'Call From'
Ident. The 'Call To' Ident is the Ident of the radio
you are calling and the 'Call From' Ident is your
own radio's Ident.
The 'Lead-in' tone is there simply to ensure that
the other person's receiver has enough time to
lock onto the Selcall signal before the actual
Ident codes are sent.
The 'Call To' Ident is the Ident of the radio you
are calling. It is this code that will activate the
alarm in the other persons receiver.
The 'Call From' Ident is the last 4 digits of your
own radio's Ident. This is used to display your
Ident on the other receiver's LCD to inform them
of who it was who called.
Thankfully, your TX4200 handles all of this
automatically. All you need to do is tell your
radio who it is you want to call.
Note: The TX4200 Selcall system adheres to
the 40ms CCIR 5 tone standard. This means
that is compatible with the 5 tone Selcall
systems used in other radios. The only
difference is that only the TX4200 (and the
earlier model TX4000) has the ability to transmit
and display the callers Ident. If a radio with a
standard Selcall system receives a Selcall from
a TX4200 it will decode it normally and will
simply ignore the extra 'Call From' Ident
attached to the end of the signal. Similarly, if
your TX4200 receives a standard Selcall signal,
it too will decode normally except that there will
be no 'Call From' Ident displayed on your LCD.
Selecting the Selcall 'Call To' Mode
The 'Call To' mode is used to make a Selcall
transmission or to programme the Selcall Ident
of the radio you wish to call.
•
Select the 'Call To' mode by briefly pressing
the CALL button on top of the microphone. A
high beep will be heard and 'Call To' will be
displayed, along with a 5 digit number. This
number represents the Selcall Ident to be
transmitted. If you have just received a
Selcall, then this Ident will be the callers
Ident, otherwise it will be the last Ident you
called.
15
CALL
Full Selcall Signal
Lead-In Tone ‘Call To’ Ident ‘Call From’ Ident
QUIET
CALL TO FROM
Q
Indicates
the QUIET
mode is set
Displays the Selcall Ident to be
called in ‘CALL TO’ mode.
Displays the Selcall Ident of the
caller in ‘CALL FROM’ mode.
Indicates
selected channel
is marked for
Quiet operation
Displays ‘CALL FROM’
in CALL FROM mode.
Displays ‘CALL TO’ in
CALL TO’ mode.
Momentary Press
selects CALL TO mode.
Press and Hold
transmits Selcall Ident.
LIQUID CRYSTAL DISPLAY
MICROPHONE