Manual
T X 3 42 0 I N S TR U C T I ON M AN UAL PAG E 9
Your TX3420 will allow you to store up to ten (10) of your
most frequently called Selcall numbers in memory.
Each number can be labelled with a 5-letter name for
easy identification.
SELCALL IDENTIFICATION NUMBER
Your TX3420 is factory programmed with its own unique
Selcall Identification Number (Ident). This number identifies
your radio from others in your area. Your radio’s own Selcall
Ident will be displayed for a few seconds, directly beneath
the channel display, when you first turn the radio on.
You will need to make your Ident known to anyone who
may need to call you using Selcall. Whenever your TX3420
hears a Selcall signal, it compares the incoming Ident with
its own. If the two Idents match, the radio knows it is being
called and sounds an alarm to alert you, otherwise the call
is ignored.
Note: Although your radio’s Selcall Ident is preprogrammed
at the factory, you can arrange to have your retailer change
it if required.
SELCALL IDENT NAMES
When storing Selcall Idents in memory, the TX3420 allows
you to add a 5 character name to each one, making it easier
to identify whose Ident you are recalling from the memory.
In addition, if an incoming Selcall matches one of the Idents
stored in the memory, the name can be displayed to make it
easier for you to identify the caller.
To add or display names
Your TX3420 must be in ALPHA mode.
To switch between
‘ALPHA’ and ‘NUMERIC’ mode
Briefly press the F (function) key followed by the ALPHA
key. ‘ALPHA’ or ‘NUMER’ will be displayed for 2 seconds
below the channel display to indicate the selected mode.
QUIET MODE (Q)
Your TX3420 can be set to monitor signals on a busy
channel but remain quiet unless it receives its own Selcall
Ident. In this way, you won’t be disturbed unless someone
calls you. When a signal containing your Selcall Ident is
received, QUIET mode is deactivated and an alarm sounds
to alert you to the call. You can then converse normally on
the channel.
To use QUIET mode
Please refer to the QUIET Mode section on page 11.
Note: QUIET mode overrides the normal Squelch system to
ensure that the radio remains quiet even when the channel
is busy. When QUIET is set, you may see the ‘BUSY’ icon
appear on the display indicating the channel is being used.
However, unless someone transmits your Selcall Ident,
nothing will be heard in the speaker.
You can activate QUIET mode on individual channels i.e.
some channels can be set to remain quiet while others can
remain open to all incoming signals.
TIP: Setting QUIET mode is not mandatory. You can still
use Selcall on any channel whether the QUIET mode is set
or not.
SELCALL MEMORIES
Your TX3420 is fitted with one Call memory and 10 Selcall
Ident memories. The 10 Selcall Ident memories are used
to store frequently used Selcall Idents. The additional Call
memory holds the Ident you last sent or received. The
memories can be viewed by briefly pressing the CALL key.
The initial memory displayed is the Call memory. Rotating
the Channel knob will step through the other 10 Selcall
storage memories in sequence. Selcall memories are
labelled ‘c0’ to ‘c9’.
UsING sElc All
ENTERING A SELCALL IDENT
1. Press the CALL button. ‘CALL TO’ is displayed, along
with the last sent or received Selcall Ident.
Note: If an ALPHA label is displayed you will need to
switch to NUMERIC Mode. To toggle between ALPHA mode
and NUMERIC mode, briefly press the F key followed by the
ALPHA key. A high beep indicates ALPHA mode is selected
while a low beep means the NUMERIC mode is selected.
2. Enter the required Selcall ident as follows:
(a) Press and hold the Channel knob until the radio
beeps. The right-hand digit of the Selcall Ident
will flash.
(b) Rotate the Channel knob to select the required
number in the flashing digit position.
(c) Briefly press the Channel knob again to select the
next digit position.
(d) Repeat steps (b) and (c) to enter all 5 digits as
required. The Selcall number is now ready to send.
SENDING SELCALL
With the Selcall number displayed, press and hold the CALL
button for 2 seconds. A long beep will be heard and the
radio will transmit the Selcall Ident.