Alphanumeric Entry Mode
To perform repetitive operations which require
several keystrokes, your T2020II may be
preprogrammed with alphanumeric labels. These
labels, when recalled, can perform a series of
operations such as selecting a channel and
sending a call.
1Press the Alphanumeric ( ) key to enter
the Alphanumeric Entry mode.
2Scroll through the list of labels by using the
cursor keys ( and ) until the label is
displayed, or enter the label for the required
party, using the keypad.
3Press the Enter ( ) key to initiate the call.
You want to call your base despatcher who has
been assigned the label, BASE. The keystroke
sequence and display might appear as follows:
Scanning
To have your radio monitor a number of channels
for valid activity (transmissions carrying tones or
codes specific to you), you can use the prepro-
grammed scanning facility in your T2020II.
Scanning To set the radio scanning through a list of
preprogrammed channels:
1Ensure the microphone is in its clip (‘on-hook’),
2Select a group preprogrammed as a scan
group (see “Selecting a Channel”), and
scanning commences.
3If the radio detects a channel with valid activity,
it pauses there and makes the traffic audible to
you. When the traffic finishes, the radio
resumes scanning.
To stop the radio scanning, select another
channel.
While the radio is scanning, you may lift the
microphone off-hook to suspend scanning and
make a call.
If the radio was monitoring channel activity when
you lifted the microphone off-hook, then it remains
on that channel. If the radio was scanning for
traffic, then it returns to its preprogrammed ‘home’
channel.
Replace the microphone on-hook to restart
scanning.
Example
459-20200-03
Making a
Call While
Scanning
Selecting a
Sequence
Press
Key
Display
Reads Explanation
Most recent selection
displayed
Label not yet identified
Label not yet identified
New label identified
BASE is called and the
BASE number is displayed
Selcall Calls
Introduction If your T2020II is fitted with Selcall, you can
make calls to specific individuals or groups on
particular channels. For it to operate, your radio
must be fitted with the Selcall module and
preprogrammed appropriately. Each channel may
be preprogrammed to provide its own Selcall
identity immediately available with the Call ( )
key.
Sending a To call another party using Selcall:
Selcall Call 1Select the appropriate channel for the party you
wish to contact (see “Selecting a Channel”);
2Check that the channel is free of traffic by
observing the BUSY indicator;
3Press the Call ( ) key, or
•Dial the identity number using the keypad, or;
•Select an alphanumeric label for the call.
4When the person you call replies, lift the
microphone ‘off-hook’and continue with the
conversation.
Receiving a When you receive a Selcall call, your radio alerts
Selcall Call you with a ringing sound (similar to that of a
telephone) and the CALL indicator appears in the
display.
•To accept the call, lift the microphone ‘off-hook’
and identify yourself in the usual manner. The
ringing stops when you press the PTT key.
•To reject a call, press any key other than the
PTT and the ringing will stop.
Group Calls If your radio sounds the ringing tone only once,
and the caller broadcasts their message without
waiting for a reply, you have received a group call.
It is not normally necessary to reply to such calls.
Receiving a Call
To be able to receive calls on a single channel,
simply check that the radio has the appropriate
channel selected (see “Selecting a Channel”).
To be able to receive calls on several channels,
see “Scanning”.
Responding Your radio remains muted until there is activity on
to Calls the channel. Listen for your own call sign, and
respond promptly when you hear it by pressing
the PTT key and identifying yourself (for example
“Mobile-9 Receiving”).
Monitor Your T2020II is fitted with muting facilities which
ensure you are not disturbed by calls which are
not clear or are not intended for you.
The Monitor ( ) key is used to override any
preprogrammed muting controls, and allows you
to hear all traffic on a channel. The following table
describes the use of the Monitor ( ) key.
CTCSS/
DCS
mute
Selcall
mute
RF
squelch
Function
Permits reception only if
a call carries an
inaudible tone or code
specific to your fleet or
group.
Permits reception only if
a call carries a special
tone sequence which
represents your identity
number.
Permits reception only if
a call has a signal above
a factory-set threshold.
This ensures that only
intelligible signals are
made audible.
To Defeat / Reactivate
Press the Monitor
() key briefly.
(If hookswitch monitor-
ing is preprogrammed,
lifting the microphone off
hook will have the same
effect.)
Press briefly again to
reactivate.
Hold the Monitor ( )
key for more than one
second.
Press briefly again to
reactivate.
