Tait T2020II User manual

1
TAIT ELECTRONICS LIMITED
Software licence agreement
This legal document is an Agreement between you, (the Licencee) and Tait Electronics Limited (Tait). By opening this product package and/or using the
product you agree to be bound by the terms of this Agreement. If you do not agree to the terms of this Agreement, do not open the product package and
immediately return the unopened product package to Tait. If you open the product package that will be deemed to be acceptance of the terms of this licence
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Licence
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products) and our willingness to be bound by the terms of this agreement, Tait grants to you as Licencee the non-exclusive right to use the copy of a Tait
software program included in the products, (the Software).
In particular the Licencee may use the program on a single machine and if the software is supplied on a diskette, the licensee may:
(a) Copy the program into any machine readable or printed form for backup purposes in support of your use of the program on the single machine
(Certain programs, however, may include mechanisms to limit or inhibit copying. They are marked copy protected), provided the copyright notice
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(b) Merge it into another program for your use on the single machine. (Any portion of this program merged into another program will continue to be
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Limited warranty
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4. Tait warrants the operation of the Software only with the operating system for which it was designed. Use of the Software with an operating system
other than that for which it was designed may not be supported by Tait, unless otherwise expressly agreed by Tait.
General
The Licencee confirms that it shall comply with the provisions of law in relation to the Software.
Law and jurisdiction
This Agreement shall be subject to and construed in accordance with New Zealand law and disputes between the parties concerning the provisions hereof
shall be determined by the New Zealand Courts of Law. Provided however Tait may at its election bring proceedings for breach of the terms hereof or for
the enforcement of any judgement in relation to a breach of the terms hereof in any jurisdiction Tait considers fit for the purpose of ensuring compliance
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agreement, oral or written and any other communications between the Licencee and Tait relating to the Software. (LS-589)

32
Contents
Introduction ................................................................................................. 5
Safety Warnings ...................................................................................................................... 5
Basic Operations ........................................................................................... 6
Key functions .......................................................................................................................... 6
Indicators And Display Functions ............................................................................................ 7
Display Window ................................................................................................................ 8
Display Window Indicators ......................................................................................... 9
Standard Operations ....................................................................................... 9
Switching the Radio On and Off .............................................................................................. 9
Switching the Radio On .................................................................................................... 9
Switching the Radio Off .................................................................................................... 9
Selecting a Channel or a Group ............................................................................................... 9
Selecting a Channel .......................................................................................................... 9
Selecting a Group ........................................................................................................... 10
Receiving a Call .....................................................................................................................10
Monitor Key .......................................................................................................................... 10
Making a Call......................................................................................................................... 11
Transmit Timer ................................................................................................................ 12
Economy Mode ..................................................................................................................... 12
Scanning Channels ...............................................................................................................12
To Activate Scanning....................................................................................................... 12
To Stop Scanning............................................................................................................ 13
Making a Call ..................................................................................................................13
Using Selcall (Selcall Option Fitted) ...................................................................................... 14
Making a Selcall Call ....................................................................................................... 13
Group Calls .....................................................................................................................15
Receiving a Selcall Call ................................................................................................... 16
Advanced User Operations .............................................................................. 18
Alphanumeric Entry Mode ..................................................................................................... 18
Repeater Talkaround .............................................................................................................19
Sending DTMF Tones (DTMF Option Fitted) ......................................................................... 20
User Programmable Scan ..................................................................................................... 21
Call Queuing (Selcall Option Fitted)...................................................................................... 22
Call Queue Not Empty .....................................................................................................22
Accessing the Call Queue ................................................................................................ 22
Exiting the Call Queue ..................................................................................................... 23
Queuing Calls.................................................................................................................. 23
Call Queue Full ................................................................................................................23

54
3
6
9
PQRS WXYZ
STAT
Ch
Fn
α
T2000
TX SCANBUSY WAIT
Introduction
The Tait T2020II radio is a state-of-the-art mobile radio that provides outstanding communi-
cation flexibility and a wide range of innovative features. The T2020II is microprocessor con-
trolled so that it can be configured to suit your personal needs and those of your fleet, for
greater communication effectiveness.
Call key
Status key
Microphone
socket
Auxiliary key
Monitor key
Channel key
Enter key
ON/OFF - Volume
knob
PTT key
Keypad
Display window
Scrolling available
indicator
Transmit indicator
Function key
Alphanumeric key
Do not allow any part of your body to come within 20cm of the antenna for more
than a few minutes while the radio is transmitting, unless there is an interven-
ing metal screen.
Switch the radio off at petrol filling stations.
Switch the radio off in the vicinity of explosive devices (such as in a quarry that
uses blasting techniques).
Use of a handheld microphone or a radio while in the act of driving could
contravene the legislation that applies in your country or state. Please check
the vehicle regulations in your own country.
T2020II Control Head
Safety Warnings
Contents (continued)
Changing the Selcall Status Code (Selcall Option Fitted) ...................................................... 24
Diverting a Received Call (Selcall Option Fitted) .................................................................. 24
Activating Call Diversion Mode .......................................................................................24
Exiting Call Diversion Mode ............................................................................................25
Receiving a Call During Call Diversion ............................................................................ 25
Making a Call to a Radio in Diversion Mode ................................................................... 26
Emergency Operation (Selcall Option Fitted) ........................................................................ 26
Other Selcall Features............................................................................................................ 26
Altering User Options ............................................................................................................ 27
Optional Accessories for the T2020II Radio ........................................................ 29
Appendix ................................................................................................... 30
Maintenance of your T2020II ........................................................................... 30
Troubleshooting .................................................................................................................... 30
Despatcher Operation............................................................................................................30

76
Indicators and Display Functions
●Indicates that your radio has received a Selcall call. If the indicator is
flashing, your radio received a call which you were unable to answer.
Your radio may be programmed to display your caller's identity.
●Indicates that your radio is ready for you to select a status code relat-
ing to your current activity. You may use the Up and Down ( /
) scroll keys to choose a status code or description from a list.
●Indicates that your radio is ready for you to enter information to en-
able it to select a new channel. You may use theUp and Down ( /
) scroll keys to choose from a list, the Alphanumeric ( )
key to enter a label, or the number keys. If the indicator is flashing,
the current channel is in Repeater Talkaround mode.
●Indicates that you can enter information, such as a channel label,
from the keypad, using letters or numbers.
●If this indicator is on continuously, the signalling mute (if active) is
open. This may be because either the microphone is off-hook, or you
have pressed the Monitor ( ) key. If the indicator is continually
flashing, the Monitor key has been pressed for long enough to open
the RF squelch.
Note: When the radio is operating normally, this indicator is off.
●Indicates the state of the auxiliary options switch. Depending upon
the programmed configuration of the auxiliary options switch, this
indicator may be either on continuously or off continuously, or may
only come on while the Auxiliary ( ) key is pressed down.
●Indicates that you can change the user programmable options. The
display window shows the option last viewed. You may use the Up
and Down (/) scroll keys to move through the options,
then select one with the Enter ( ) key.
●Indicates you have pressed the Enter ( ) key.
When these indicators are all off, the radio is in DTMF mode. It can
now transmit DTMF tones, entered via the keypad.
STAT
Ch
Fn
CALL, STATUS, CHAN-
NEL, ALPHANUMERIC
& FUNCTION indicators
all off
Basic Operations
The T2020II control head includes the following keys and indicators:
Key Functions
The keypad functions are as follows:
Call Used to activate the Selcall function, to enable you to make calls to
other users.
Status Used to select preprogrammed status messages to indicate your
own present status (such as EN ROUTE or AT LUNCH).
Channel Used to select a channel, a scan group, a number or a label asso-
ciated with the channel name, and to access the Repeater Talka-
round option.
Alphanumeric Used to turn on Alphanumeric mode.
Monitor Used to access to the signalling mute and RF squelch control of
your receiver.
Auxiliary Used to control an auxiliary hardware option.
Function Used to customise the operation of your radio to suit your own
requirements.
Enter Used to complete dialling entries. (Used for channel entry, Selcall
calls, DTMF dialling, alphanumeric entry and option selections.)
0 to 9 Used for dialling numbers when the indicator beside the Alphanu-
meric () key is not illuminated.
[ABC] to [WXYZ] Used for entering letters when the indicator beside the Alphanu-
meric () key is illuminated.
Star/Up If the   indicator is displayed in the display window, these
keys are used to scroll up and down through a list of choices.
Hash/Down If the   indicator is not displayed in the display window, they
act as dialling keys for Selcall and DTMF dialling.
STAT
Ch
Fn

98
Standard Operations
Switching the Radio On and Off
Switching the Radio On
Switch the radio on by rotating the volume knob clockwise to about one third of its maximum
setting. The control head display then shows a power-up message.
When first switched on, the radio resumes operation on the same channel as when it was last
switched off.
Press and hold the Monitor ( ) key until the indicator flashes. The radio then emits two
short tones. Depress the key briefly to return the radio to the quiet state. The radio then emits
a short tone.
You may need to finally set the volume level when you receive your first call.
Switching the Radio Off
Switch the radio off by rotating the volume knob anticlockwise, to its primary position.
The T2020II retains some settings that are used when it is switched on again.
Selecting a Channel or a Group
Selecting a Channel
When first switched on, the radio resumes operation on the same channel as when it was last
switched off.
To check the current channel:
●Select Channel mode by pressing the Channel (
Ch
) key, and the current channel
name appears in the display window.
To select a new channel:
●Press the Up and Down ( /) scroll keys on the keypad to move through the list
of the available channels, until the display shows the identity of the required channel, or
●Use the numeric keypad to enter a new channel number, then press the Enter ( ) key,
or
●Use the alphanumeric keypad to enter an alphanumeric label, then press theEnter ( )
key to initiate the call.
Display Window
The LCD display window provides you with direct visual access to information and messages
about the status of your calls and your radio.
Display Window Indicators
BUSY Busy - This appears whenever there is activity on you current chan-
nel. If the signalling mute on your radio is closed (see the
function), you may not hear the traffic until you lift your microphone
off-hook.
TX Transmit - Your radio is transmitting. This message is displayed when
you press the PTT key. It should also come on briefly when your radio
makes a Selcall or DTMF call.
SCAN Scan - Your radio is sampling each of a group of channels for any
activity. When it detects activity, it pauses on that channel for as long
as the channel carries traffic and then resume scanning.
WAIT Wait - The channel you are using is busy and your call has been
deferred. The radio gives you an alerting signal to indicate that the
channel is now free.
Scrolling available - You are now able to use the Up and Down
(/) scroll keys to move through a list of choices. Having
found an appropriate choice with the keys, push the Enter ( )
key to select.
STAT
Ch
Fn
α
TX SCANBUSY
T2000II
WAIT

1110
The Monitor key may be programmed to override one or more of the mutes. Occasionally, you
may find the message you are receiving is still intelligible, but is being cut off periodically by
the RF squelch. In this case, you can force the radio to leave the RF squelch open continu-
ously.
The most common configuration is as follows:
●Press the Monitor key briefly (less than one second) to override CTCSS/DCS or Selcall
signalling mute. (If hookswitch monitoring is programmed, lifting the microphone off-
hook has the same effect.)
●To also override the RF squelch, hold the Monitor key for more than one second, until the
radio sounds two short tones, beep beep, and the MONITOR indicator flashes. Press
again to restore.
Your T2020II may be fitted with the ability to hush (mute) another device, such as a car stereo,
so that your speech is clearly audible to other users when you transmit a call. Consult your Tait
dealer to see if this facility is active on your radio.
Making a Call
Select the desired channel, as previously described, for the party you wish to contact. If the
BUSY indicator is on, the channel is busy and you must wait until it is free, before proceeding.
If you attempt to transmit anyway, the WAIT indicator appears in the display, and your attempt
is deferred. The radio sounds an alerting tone as soon as the channel becomes free.
●Lift the microphone off-hook and listen to check that no-one else is using the channel.
You may also have to press the Monitor ( ) key briefly, depending on the options
fitted to your radio.
●Hold the microphone about 5cm from your mouth and press the Press-To-Talk (PTT)
key, located on the side of the microphone (see Figure 1). Speak clearly into the micro-
phone, identifying yourself by your call sign, and the person you wish to contact (for
example - Mobile-9 to Base). Release the PTT key when you have finished talking (see
Figure 2).
STAT
Ch
Fn
α
BUSY
T2000
Selecting a Group
A group is simply a collection of channels grouped together for scanning or voting. Select a
group the same way as a channel.
Receiving a Call
The T2020II remains muted until another user makes a call. Listen for your call-sign when
you hear activity, and reply promptly by identifying yourself (for example Mobile-9 receiv-
ing).
The BUSY indicator in the display appears whenever there is any activity on the channel. Your
radio may only unmute the speaker for some of this activity, depending on which signalling
options are fitted to your radio. Consult your Tait dealer about the signalling options available.
Using the Monitor Key
The Monitor ( ) key enables you to monitor a channel for other users, regardless of the
muting controls programmed into your radio. There are three types of muting control which
may screen your calls:
RF squelch Permits reception only if the radio's signals exceed a preset thresh-
old. This ensures that only intelligible signals are audible.
CTCSS or DCS mute Permits reception only if a signal carries an inaudible tone or code
specific to your fleet or group.
Selcall mute Permits reception only if the signal carries a special audible tone se-
quence at the beginning of the transmission.
Note: The RF Squelch is always programmed to operate in your radio, but the CTCSS, DCS
or Selcall mutes are optional, depending on the way your radio is programmed.
Figure 1 Figure 2

1312
Transmit Timer
Your T2020II is fitted with a preprogrammed timer to limit the maximum length of trans-
missions. When the time limit is reached, the radio sounds a three tone warning, and trans-
mission is terminated.
Economy Mode
The T2020II incorporates an Economy mode which conserves battery power by turning off
some internal circuitry, and dimming the control head back-lighting. This occurs after a prede-
termined period of inactivity.
When Economy mode is active, the display backlighting dims or switches off.
Operating any of the control head controls, or the PTT key, restores the radio to full activity
immediately.
Scanning Channels
Your T2020II can be programmed with the scanning facility, which enables it to sequentially
monitor a number of channels, pausing its search when it detects activity on a channel. To
change the channels included in your scan group, refer to User Programmable Scan.
To Activate Scanning
Set the radio scanning through a list of preprogrammed channels, as follows:
●Ensure the microphone is placed on its hook. (Your radio may be programmed to scan
whenever the microphone is off-hook. Consult your Tait dealer for more information on
this feature.)
●Select the appropriate scan group in the same way as selecting a channel (see Select-
ing a Channel). The SCAN indicator appears in the display window, and scanning com-
mences.
STAT
Ch
Fn
α
SCAN
T2000 II
The T2020II now repeatedly scans through all programmed channels, searching for activity.
When activity is detected on a channel, the scan is halted, and the display window shows the
active channels name. (If signalling options are active in the radio, only activity with valid
signalling tones halts the scanning.) The radio pauses and unmutes on that channel, as long
as the traffic remains, and the SCAN indicator flashes. Scanning resumes after a short delay,
once the traffic disappears.
You may change channel if you wish, but this cancels Scan mode. Otherwise, converse in the
normal manner and, when finished, place the microphone back on its hook to restart the scan.
To Stop Scanning
Scan mode is cancelled by selecting any non-scanning channel. The SCAN indicator then
disappears from the display window.
Making a Call
If you wish to make a call when the radio is in Scan mode, you may lift the microphone off-
hook at any time to suspend scanning. If the radio has halted scanning to monitor the traffic
on a channel, it remains on that channel when you lift the microphone off-hook. If the radio
has found no traffic (i.e. has not halted), it reverts to the preprogrammed home-channel.
Using Selcall (Selcall Option Fitted)
By using Selective Calling (Selcall), you can make calls to specific individuals or groups, on
particular channels. To use Selcall, your T2020II must be fitted with a Selcall module, and
each channel preprogrammed to provide its own Selcall identity.
Making a Selcall Call
Call another party using Selcall, as follows:
1. Check that the radio is on the correct channel and that the channel is clear before at-
tempting to make the call.
2. Select the appropriate channel for the party you wish to contact (see Selecting a Chan-
nel).
3. If your radio is programmed with the ability to make a one touch call to one other user
(usually your base or despatcher), press the Call ( ) key for about one second.
The TX indicator appears in the display briefly, and your radio sounds a short beep as
the call is transmitted.

1514
6. After the call is sent, you may hear an acknowledging tone, beep, or series of tones from
the other users radio, indicating that your call has been received. If you do not hear a
tone, either the other user's radio is incapable of generating the acknowledging tone, or
it is off, or they are out of range of your call.
Your T2020II may be programmed to display the status of the called unit, as follows:
Status displayed Explanation
-NO ACK- No acknowledge sequence was detected.
NO STAT An acknowledge sequence was detected but no status information
was decoded.
Status message An acknowledge sequence was detected and the decoded status
number can be identified.
Status number An acknowledge sequence was detected and the decoded status
number cannot be identified.
If any control head activity is detected before any of the above messages are displayed, the
acknowledge sequence is no longer expected, and messages will therefore no longer be
displayed.
Group Calls
If you wish to call a group of other users, you may do so by dialling the digits common to all
members of the group and then using the # character as a substitute for all the remaining
digits. If you are not sure whether this facility has been programmed into your radio, consult
your Tait dealer.
STAT
Ch
Fn
α
T2000 II
4. If your radio is programmed with the ability to call other users with Selcall on your
channel, press the Call ( ) key briefly to activate Selcall mode. Use your keypad to
enter the call code for the other user. Each digit appears in the display as it is entered.
When you have entered all of the digits, press the Enter ( ) key or the Star ( )
key, to send the call.
Example: You wish to call another user on the current channel (REGION 2), with the number
37515. The sequence of keystrokes, and the corresponding display characters that appear, is
as follows:
5. When the party you called replies, lift the microphone off-hook and press the PTT key to
converse.
Last number called
1st digit of the new number
2nd digit of the new number
3rd digit of the new number
4th digit of the new number
Call placed
Current channel
Press key Characters displayed Explanation
7
PQRS
3
DEF
5
JKL
5
JKL
1
TX
5th digit of the new number

1716
STAT
Ch
Fn
α
T2000 II
Example: You wish to call a group of users on the current channel (REGION2) with numbers
which all begin with 37, and have three more digits. After you have selected channel REGION
2, the sequence of keystrokes, and the corresponding display characters that appear, is as
follows:
●Your T2020II may be programmed to queue incoming calls. If this feature is enabled,
the callers identity is put in the queue after the ringing stops. All other call indicators are
cleared when the received call has been queued. (Refer to the section Call Queuing for
more information.)
●If the call was not queued and you are still unable to answer the call, the radio indicates
that a call was received in your absence by leaving the CALL indicator flashing.
●If you do not wish to answer a call, the ringing may be cancelled at any time by pressing
any of the control head keys. (The function associated with the key you press will not be
invoked.) Note that if the callers identity was displayed and the call was still not an-
swered, pressing the Enter ( ) key clears the call and initiates an immediate call-
back to the caller.
●If you are one of the recipients of a group call, your radio only sounds a single sequence
of the ringing tone, burr burr. The caller then broadcasts a message to all members of
your group.
When the group call has been sent, there is no acknowledging tone from any of the other
users. Wait a few seconds after the TX indicator in the display window disappears and then
broadcast your message. Phrase your message in such a way that it requires no acknowledge-
ment, since the other users cannot all reply at once.
Receiving a Selcall Call
When you receive a Selcall call, the CALL indicator flashes and a ringing tone (similar to that
of a telephone) sounds from the speaker.
Note: Your T2020II may be programmed to display the
callers identity when you receive a call. Consult your
Tait dealer for more information on this feature.
●To answer the call, lift the microphone off-hook and iden-
tify yourself. As soon as you operate the PTT key, the
ringing tone stops.
●If you do not answer the call within a short time, the ringing
tone stops. The radio may then switch on another alerting
device (e.g. the horn in your car) to attract your attention.
7
PQRS
3
DEF
TX
Press key Characters displayed Explanation
Current channel
Last number called
1st digit of the new number
2nd digit of the new number
Group wild card character
Call placed to all 37??? users

1918
STAT
Ch
Fn
α
T2000 II
Advanced User Operations
Most of the special features detailed below must be enabled during programming of the T2020II.
Consult your Tait dealer to find out which of these features have been enabled in your radio.
Alphanumeric Entry Mode
The T2020II contains a number of memory locations which are able to be accessed with an
alphanumeric entry or label, from the keypad. The alphanumeric label may be the same as a
channel name or it may be a quite separate word, persons name or acronym which helps you
find the appropriate memory location. Each location contains information which selects a
channel scan group, makes a Selcall or DTMF call or selects a new Selcall status code.
Select a memory location by its alphanumeric label, as follows:
1. Press the Alphanumeric ( ) key to enter Alphanumeric mode.
2. Locate the desired label by using theUp andDown ( /) keys to scroll through
the list until the label is displayed. Alternatively, enter the label associated with the party
you want, using the keypad.
A star appears in the display as you type each character, until you have entered enough
for the radio to recognise the label. When it does, it displays the label in full. Pressing
the Enter key causes any instructions (channel selection, send call, and so on) con-
tained in the memory location to be carried out.
3. Press the Channel (
Ch
) key and the display changes from the label to the channel
name. (The radio may be programmed to return to the channel name display after a short
while, anyway.)
Example: You wish to call your BASE, which monitors a channel called REGION2 and has the
Selcall code 24624. The sequence of keystrokes, and the corresponding display characters
that appear, is as follows:
Repeater Talkaround
Repeater Talkaround is a programmable option that allows your T2020II to bypass the re-
peater, and transmit and receive calls directly on the repeater transmit frequency. This feature
can be used, for example, when you are out of range of the repeater.
1. Press the Channel (
Ch
) key for longer than 1 second.
The CHANNEL indicator should now be flashing, indicating that the T2020II is now in
Repeater Talkaround mode.
2. Select the appropriate channel and proceed with your call in the usual manner.
Last label entered
Unable to determine new label
Explanation
Unable to determine new label
New label identified
Characters displayed
Channel REGION2 selected and
Selcall code transmitted
Channel for BASE displayed
Press key
7
PQRS
2ABC
2ABC
2ABC
Ch