Peter Miles
Northam, Western Australia QRZ Page: VK6YSF
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TAIT T2000ii RADIO PROGRAMMING
TAIT
T2000ii radio programming and adjustments. December 2019
The T-2000/II is a series of mobile VHF and UHF radios developed by Tait Communications in Christchurch, New Zealand, in the late 1990s.
The Tait 2000II series is fantastic for conversion to Amateur Radio bands as it requires only a few adjustments, and the programming software is very straightforward. The radio's identification labels indicate that the radio I have for conversion has 4 channels, a frequency range of 136MHz to 174MHz, and is set for a narrow FM deviation of 2.5kHz. Additionally, the radio does not include any microphones or 12-volt power cables.
Tait
T2000 Series Model variant Recognition
T 2 0
AA
-
B
C
D
-
E
F
G
AA
= Model Variant:
B
= Frequency Span:
C = Deviation:
D = Frequency
Stability
E = Country
FG = Factory
Options
10 =
Conventional 4 Channel
3 =
136-174 MHz
2 = Narrow Band (2.5 kHz) (12.5 kHz channel space)
1 = 5ppm (-10-60°C)
F = UK (EMC standard)
OO = ?
The 12V connector used in the Tait 2000 series radios is not a commonly found type. However, pre-assembled leads for these radios are available at low cost on
eBay. It is important to note that these leads generally do not come with inline fuses.
To disable the internal speaker and exclusively use an external speaker, you can cut the internal speaker link wire. This will effectively disable the internal speaker. Please refer to the instructions and diagram below for further guidance.
The programming cable is connected to the microphone RJ12 socket. It comprises a 6-pin RJ12 connector on one end and a DB9
serial/comms port connector on the other end, which connects to the computer. In this particular instance, the cable was made from an old phone cable that was terminated with a 9-pin serial port connector, as shown in Figure 2 below.
The Tait TN-1228-SR CPA v3.00 programming application, despite its age, is capable of running on a Windows 7 (64-bit) machine and is compatible with T2010ii, T2015ii, and T2020ii radios.
To connect the radio to the computer, ensure that the radio is powered up and use the programming cable. Connect the cable's 9-pin connector to the computer's serial port, and then connect the RJ-12 telephone-style plug to the radio's microphone socket.
Reading
a Radio
Make sure the radio is
connected to a power source and the power is on.
Switch the radio on.
Select the Radio > Read
menu option, or select the Read button from the toolbar.
When
the programming database is read from the radio, the application will
indicate the radio model, Band and radio serial number.
Sub-audible
Signalling Form
The
Sub-audible Signalling form is divided into two tabs. For T2010/T2015
radios, only Signalling is available.
Settings
for CTCSS and DCS transmissions are determined in the Signalling tab.
CTCSS and DCS for individual channels are set in the CTCSS/DCS
Rx/Tx
fields (Channels form).
Rx CTCSS/DCS
Filter Enabled For
The
Rx CTCSS/DCS Filter Enabled For field determines the settings for the
radio’s CTCSS/DCS filter. The filter can be automatically switched
off for channels that do not have CTCSS or DCS.
All: The filter is active on
all channels, regardless of whether they are programmed with CTCSS or
DCS.
CTCSS/DCS: The filter is
active only on channels that have CTCSS or DCS programmed for the
receive frequency.
Set
to: CTCSS/DCS
Tx DCS Polarity
The
Tx DCS Polarity field sets the polarity of all transmitted DCS codes
defined in the Tx Sig field
(Channels form). Some systems require the DCS code to be inverted when
transmitted. Select Normal or Inverted.
Set
to: Normal
Rx DCS Polarity
The
Rx DCS Polarity field sets the polarity of all received DCS codes
defined in the Rx Sig field
(Channels form). Select Normal or Inverted.
Set
to: Normal
Tx CTCSS
ReverseTone Burst
When
the Tx CTCSS Reverse Tone Burst field is checked, a reverse tone burst
on the end of a CTCSS transmission speeds up the shutdown of CTCSS
decodes, providing your decoder is capable of detecting a reverse tone
burst. When this field is unchecked, no reverse tone burst is
transmitted.
Set
to: Unchecked
Receiver
Monitoring Form
The
fields in the Receiver Monitoring form set properties related to the
operation of the radio’s monitor function.
Monitor Function Disables
The
Monitor Function Disables field determines which mutes are to be
disable by the monitor function.
None (T2010 only): When the monitor function becomes
active, no mutes are disabled.
All Mutes: Both the selective call mute and the
sub-audible signalling mute (CTCSS and DCS) are overridden when
monitor is activated. The radio user is able to hear all traffic.
Selcall Mute: Only the Selcall mute is overridden when
monitor is activated. The radio
user only hears traffic that has sub-audible signalling.
Set
to: All Mutes
Auto Quiet Time
The
Auto Quiet Time field sets the duration of the auto quiet timer. When
the programmed duration of the auto quiet timer expires, monitor
deactivates and the radio resumes normal operation. Enter a value
between 1 and 250 seconds (T2010 and T2015 radios) or 255 seconds
(T2020 radios) in steps of 1 second, or 0 to disable the auto quiet
timer.
Set
to: 0
Monitor State at Power Up
T2020
radios only. The Monitor State at Power Up field determines whether
monitor is inactive or active when the radio is turned on.
Not
available for the T2010
Automatic Monitor with Call Setup
T2020
radios only. The Automatic Monitor with Call Setup field determines
whether monitor is activated when an outgoing Selcall call is made.
For this field to be available, Selcall hardware must be installed in
the radio.
Checked: Monitor is activated when a Selcall call is
successfully sent.
Unchecked: The radio can transmit Selcall calls without
activating monitor. Monitor must be activated via another method
before communication commences.
[MON] Key Short Press
The
[MON] Key Short Press field sets the behaviour of the radio when the
monitor key is given a short press.
When
the [MON] Key Short Press field is checked, a short press of the
monitor key toggles monitor on and off. If unchecked, a short press of
the monitor key only disables monitor.
Set
to: Checked
[MON] Key Long Press
The
[MON] Key Long Press field sets the behaviour of the radio when the
monitor key is given a long press.
When
the [MON] Key Long Press field is checked, a long press of the monitor
key activates the squelch override function. This can be useful where
there is activity in marginal areas and the signal is too weak to be
reliably heard.
If
squelch override is already active when the monitor key is pressed,
then squelch override is deactivated and monitor is activated.
Set
to: Checked
Cancel Call Indicators on Request
T2020
radios only. When the Cancel Call Indicators on Request field is
checked, the ringing tone and the call indicator light will be
cancelled if a radio monitor reset is received.
This
option is only available if Selcall is fitted.
Not
available for the T2010
Open Monitor on PTT Press
T2020
radios only. When the Open Monitor on PTT Press field is checked, the
audio monitor opens when the PTT key is pressed.
Not
available for the T2010
Hook-switch Monitor
When
the Hooks-witch Monitor field is checked, the monitor is activated
when the hook-switch is open. Setting. Setting this option does not
affect any other scanning functions of the hookswitch.
Set
to: Checked
Transmitter
Setup Form
Transmitter
options are set in the Transmitter Setup form.
Transmit Timer Duration
The
Transmit Timer Duration field sets the duration of the transmit timer,
which determines the longest continuous transmission permitted by the
radio. Enter a value between 1 and 250 seconds in steps of 1 second,
or 0 to disable the transmit timer. The recommended value is 60
seconds.
Once
the transmit timer expires, the radio may be prevented from
transmitting for the duration of the transmit lockout timer, which is
set in the TransmitLockout Duration field.
Set
to: 250
Transmit Lockout Duration
The
Transmit Lockout Duration field sets the duration of the transmit
lockout timer. Enter a value between 1 and 250 seconds in steps of 1
second, or 0 to disable the transmit lockout timer. The recommended
value is 30 seconds.
Set
to: 30
Tx Inhibit
The
Tx Inhibit field sets the transmit inhibit conditions (None, Busy or
Mute).
None: The radio transmits when the PTT is pressed, even
when there is traffic on the channel.
Busy: The radio does not transmit when the PTT is
pressed if there is activity on the channel, whether it is valid or
invalid.
Mute: The radio does not transmit when the PTT is
pressed if there is activity on the channel and the mute is active.
This could be caused by an invalid CTCSS/DCS code or an active Selcall
mute. If monitor has been activated, the radio transmits regardless of
valid or invalid activity.
A
Selcall call initiation (via the press of the auxiliary key, call key
or a function key) follows the conditions set in Tx Inhibit.
Set
to: None
Repeater Talk Around
T2020
radios only. When the Repeater Talk Around field is checked, a long
press of the channel key activates repeater talkaround. Repeater
talkaround allows the radio user to bypass repeater operation and so
communicate directly with other radios. While repeater talkaround is
active, all transmissions are made on the receive frequency programmed
for the channel.
Not
available for the T2010
Fast PTT via AUX Line
T2010/T2015
radios only. When the Fast PTT via AUX Line field is checked, and the
PTT is wired to the AUX line on the options connector, the AUX output
line is used as the
PTT
input line. This results in more frequent polling, and faster PTT for
data applications.
Set
to: Unchecked
Setting Up Channels and Scan Groups
This section contains detailed
information on setting up channels and scan groups.
Channels
Form
The
main settings for channels are set up in the Channels form. The
Channels form for T2010/T2015 radios is shown below.
The channel can be cut and pasted to
and from Micro Soft Excel spreadsheet and the channel form.
Click on the upper left cell in the
channel form to copy or past all entries in the form.
The
Channels form contains default values for one channel. Select the Add
button to add a new channel, select the Delete button to delete the
currently selected channel, or select the Repeat button to duplicate
the current channels settings, except for the Channel ID and Channel
Name fields.
There
must be at least one channel in the list. The number of channels
permitted depends on the radio model, as follows:
·T2010: up to 24 channels
·T2015: up to 24 channels
·T2020: up to 100 channels
·T2020 firmware version 7.01 or higher: up to 1200
channels.
Channel ID
The
channel ID field sets the channel number, which cannot be shared by
any other channel or scan group.
·For T2010 radios, set up to 24 channel identities,
between 1 and 24.
·For T2015 radios, set up to 24 channel identities,
between 1 and 24.
·For T2020 radios, set up to 100 channel identities,
between 1 and 255.
·For T2020 radios (firmware version 7.01 or higher), set
up to 1200 channel identities, between 1 and 4999.
Channel
Name
T2020 radios only. The Channel Name
field sets the name which is appears in the control head display on
T2020 radios when the radio is in channel mode. The radio enters
channel entry or channel select mode when the radio channel key is
pressed.
Enter
a name of up to 8 characters, chosen from A to Z 0 to 9 * + - <
> / \ space.
A
default name is generated from the channel identity. For example, the
first channel defaults to CHAN1.
Rx and Tx Frequencies
The
Rx Freq field sets the receive frequency (in MHz) for the channel, and
the Tx Freq field sets the transmit frequency (in MHz). For each
channel, enter a frequency within the radio’s frequency band that is
a multiple of 5 kHz or 6.25kHz.
The
minimum channel spacing is dependant on the radio band and IF
bandwidth. The letter in the sixth position in the radio part number
(first after the hyphen) indicates the radio’s frequency band, as
outlined in the table below.
BandReceive Frequency (MHz)Transmit Frequency (MHz)
0 500-530 MHz 500-530
MHz
1 220-270 MHz 220-270
MHz
2 66-88 MHz 66-88
MHz
3 136-174 MHz 136-174
MHz
4 175-225 MHz 175-225
MHz
5 400-470 MHz 400-470
MHz
6 450-520 MHz 450-520
MHz
7 330-366 MHz 330-366
MHz
8 800-870 MHz 800-870
MHz
9 360-400 MHz 360-400
MHz
Rx and Tx
Signalling
The
Rx Sig field sets the sub-audible signalling the radio must receive
before the activity is regarded as valid and the mute opened. The Tx
Sig field sets the sub-audible signalling that accompanies each
transmission made on the channel.
For
both fields, select the required frequency from the drop-down list.
Both fields must be either CTCSS (tones starting with C) or DCS (tones
starting with D). Leave these fields set to None if no sub-audible
signalling is used on the channel.
Tx Call
The
Tx Call field provides a list of transmit Selcall sequence identities.
These are identities that have been defined in the Tx
Call Identity field (Selcall
Sequences tab). Select the transmit call identity required from the
drop-down list. To disable Selcall on the channel, select None.
Repeater
The
Repeater field provides a list of Selcall repeater sequence
identities. These are identities that have been defined in the Repeater
Identity field (Selcall Sequences
tab). Select the repeater identity required from the drop-down list.
To transmit no repeater sequence on the channel, select None.
Power
The
Power field sets the transmit power level. Select a power level
setting of Off, Low High or Max (maximum - T2020 radios only), within
the limits permitted for the region in which the radio operates.
Bandwidth
T2020
radios only The Bandwidth field sets the transmitter deviation and the
receiver audio sensitivity for systems using different channel
spacing. Select either Narrow (narrowband) or Wide (wideband) for each
channel.
Scan
T2010/T2015
radios only. Select Yes for the channel to be included in the scan
operation. While scanning, the radio cycles through all the included
channels until it detects valid activity. When activity is detected,
the radio stops on that channel until the activity stops, then waits
for the time set in the Scan Hold
Time field before returning to scan
mode.
If
Enhanced Scanning (Specifications
form) is checked for T2015 radios, then two additional options are
available, Pri and Sec. Both options add the channel to the scan list,
'Pri' specifies that the channel is the primary priority scan channel
and 'Sec' specifies that the channel is the secondary priority scan
channel. Scan types in the Enhanced
Scan Form will take precedence over
these settings, unless the radio is switched on while the PTT is
pressed.
BCD Channel
Selection
T2010/T2015
radios only. When the BCD Channel Selection field is checked, it is
possible to select the radio channel using the internal BCD channel
select lines. In this case, the control head channel keys are
disabled.
BCD Polarity
Inverted
T2010/T2015
radios only. When the BCD Polarity field is checked, a high voltage
input is considered to be a ’0’ and a low voltage input is
considered to be a ’1’. Off Hook
Scanning
T2010/T2015
radios only. When the Off Hook Scanning field is checked, scanning is
possible when the
hookswitch
is open. Scan Hold Time T2010/T2015 radios only.
The
Scan Hold Time field determines how long the radio remains on a
channel after valid activity finishes, before scanning is resumed.
Enter a time between 0 and 15 seconds in steps of 1 second.
Disassembly
Instructions
Caution: To carry out alignment it is necessary
to remove only the top cover (1) and logic PCB retaining screws (3).
It is essential that the bottom cover (13) and microprocessor shield
(5) with its three retaining screws (4) are torqued down as specified
in Figure 3.3.
Caution: Various electronic components within
the radio can be damaged by electrostatic discharge. A properly
grounded earth mat and wrist strap should always be used (refer to
Section 3.1.4).
Item
Description
Cat No.
Qty
Torque
(in.lb)
1
TOP COVER
303-23134-01
1
2
LOGIC PCB SEE PARTS LIST
1
3
SCREW M3X8 PANPOZI TAPTITE (LOGIC PCB SCREWS)
349-00020-32
3
8
4
MACHINE SCREW M4X25 (MICRO. SHIELD SCREWS)
345-00050-18
3
12
5
MICROPROCESSOR SHIELD
319-01164-XX
1
6
CHASSIS
308-13093-XX
1
7
D-RANGE BLANKING PLATE
360-01053-XX
1
8
SCREW M3X8 PANPOZI TAPTITE
(RF CONNECTOR
SCREWS)
349-00020-32
2
8
9
RF CONNECTOR PLATE
10
RF CONNECTOR
1
11
RF PCB
1
12
SCREW M3X8 PANPOZI TAPTITE
(RF PCB SCREWS)
349-00020-32
4
8
13
BOTTOM COVER
303-23135-XX
1
14
M4X35 PANPOZI TAPTITE (BOTTOM COVER SCREWS)
349-00020-49
4
12
Gain
Access to the Logic PCB
Refer to Figure 3.3.
Remove the top cover (1) by
unscrewing the four bottom cover screws (14).
Remove the three logic PCB retaining
screws (3).
It should now be possible to open
out the logic PCB (2), giving access to both sides of the logic PCB,
and access to the RF PCB (11) tuning points, audio, plug-in
TCXO
PCB and loop filter components.
Remove
the Bottom Cover and Microprocessor Shield
Refer to Figure 3.3.
Remove the top cover and logic PCB
screws as instructed in Section 3.2.1, then remove the
three-microprocessor shield retaining screws (4).
Remove the screw securing the
earthing wire from the control head to the microprocessor shield.
It should now be possible to lift
off the microprocessor shield (5) and the bottom cover (13).
This will give access to both sides
of the RF PCB and IF PCBs and enable the control head to be removed.
6.4.1
Power Output
Set up the test equipment as shown
in Section 4 and close the PTT switch.
Turn RV324 fully clockwise and check
that the output power is greater than 30W for all channels.
Select a channel programmed for high
power and adjust RV324 for 25W.
Check that the transmit current is
approximately the values stated below:
Model
Current
T2000-100 6A
Video
of the TAIT
T2000ii radio programming and adjustments.
T2000
v3.01 programming application (22Mb): DOWN
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