GME TX3220 User manual
TX3220
COMPACT
UHF RADIO
INSTRUCTION MANUAL
INTRODUCTION
Your GME TX3220 radio is Australian designed and
built and is one of the most advanced UHF Citizen Band
radios available.
The TX3220 combines the very latest in electronic hardware
with the most up-to-date computer aided design and
manufacturing techniques to produce an extremely
compact mobile radio with outstanding specifications
and performance.
The TX3220’s small size means it can be mounted in almost
any convenient location and its strong diecast aluminium
chassis makes it the most robust radio of its kind. With just
two rotary controls and four touch keys, the TX3220 is the
easiest to operate UHF radio in our range.
EMERGENCY CHANNELS
The ACMA has allocated channels 5/35 for emergency
use only. Channel 5 is the primary Simplex Emergency
Channel. Where a Channel 5 repeater is available, you
should select Duplex on CH 5.
Note: Channel 35 is the input channel for the Channel 5
repeater therefore Channel 35 should also not be used for
anything other than emergency transmissions.
TELEMETRY CHANNELS
ACMA regulations have allocated channels 22 and 23
for telemetry only applications and have prohibited the
transmission of speech on these channels. Consequently
the TX3220 has a transmit inhibit applied to channels 22
and 23.
FEATURES
Microprocessor Controlled Frequency Synthesiser:
Allows user programmable control of scanning, channel
memories and selected feature options.
Permanent Memory: Retains all user settings in
non volatile memory even when the power has
been removed.
Programmable Scan Function: Scans up to 40 user
programmable channels with a choice of either Group
or Open scan functions available (user selectable).
Individually Programmable DUPLEX function: User
selectable for only those individual channels in your
area that have repeaters, leaving the others free for
use as extra simplex channels.
Priority Channel: A user programmable priority channel
feature allows your working or local repeater channel to
be instantly recalled at the press of a button.
CONTENTS
THE FOLLOWING ITEMS ARE INCLUDED WITH YOUR TX3220
damaged, please contect your
retailer or place of purchase.
..........................2
. . . . . . . . . . . . . . . . . . . . 2
.....................2
FEATURES...............................2
.............................3
Volume...............................3
Backlighting ...........................3
Selecting Channels ......................3
Squelch ..............................3
. . . . . . . . . . . . . . . . . . . . . . . . . . 4
........................4
Scanning .............................4
Time-outTimer.........................6
CTCSS..................................6
.............7
...........................8
.............................10
..........10
.........................11
............................12
GME After Sales service . . . . . . . . . . . . . . . . . 12
FRONT PANEL CONTROLS
High Contrast Liquid Crystal Display: Fully detailed
and all selected functions at a glance. Backlit for viewing
at night.
CTCSS: A built-in Continuous Tone Coded Squelch
System provides quiet channel operation.
Overvoltage Protection: Special overvoltage detection
circuitry protects the radio and warns of excessive
voltage conditions by flashing the display.
Surface Mount Technology: The very latest surface
mount component types, design and assembly techniques
and quality control procedures are used to ensure the
highest performance and reliability.
Designed and Manufactured in Australia: The
TX3220 has been totally designed and manufactured in
Australian community.
VOLUME
Rotate the Volume control clockwise past the ‘click’ to
comfortable listening level.
pressing the SQL key. You can now adjust the volume by
listening to the receiver’s background noise. When finished,
briefly press the SQL key again to re-mute the radio.
BACKLIGHTING
easy viewing at night or in low light situations. The back
SELECTING CHANNELS
Select the required channel by rotating the Channel
selector knob. Rotate the knob clockwise to select higher
channels and counter-clockwise to select lower channels.
SQUELCH
The Squelch is used to eliminate any annoying background
noise whenever there are no signals present. The Squelch
can be opened or closed with the SQL key. When the
Squelch is open, the receiver’s background noise can be
heard and ‘BUSY’ is displayed. When the Squelch is closed,
the receiver remains quiet while there are no signals present
but any incoming signals will override the Squelch and be
heard in the speaker.
To Open the Squelch
Briefly press the SQL key. A low beep with be heard.
background noise.
To Close the Squelch
Briefly press the SQL key again. A high beep will be heard
and the receiver will become quiet.
OPERATION
Channel Selector Volume Control
Key
Scan Key
Key
Squelch Key
SQL
Adjusting the Squelch level
The TX3220’s default squelch level has been factory set
to provide optimum performance under most operating
conditions, but can be adjusted to suit changing conditions
if required.
To adjust the Squelch level
First press and hold the SQL key while rotating the
channel selector knob. ‘BUSY’ will flash indicating the
TX3220 is now in the Squelch Edit mode (you can now
release the SQL key). Continue rotating the channel
selector knob clockwise or counter-clockwise to select the
required Squelch level. (1-9).
A level of 1 will allow the Squelch to open on very weak
signals, whereas a level of 9 requires reasonably strong
signals to overcome the Squelch. The default level is 2.
To exit and save the current Squelch level:
hold the SQL key for 1.5 seconds (or simply wait
5 seconds for the Edit mode to time-out).
DUPLEX SWITCH
different frequency to that which it receives. This allows
operation through any repeater stations in your area.
Repeaters automatically re-transmit your signal over a
wider area, providing greatly increased range.
TX3220 receives on that channel but actually transmits
30 channels higher.
e.g.
* Emergency Channel only
individual channels. This is particularly useful in country
areas where there may only be one or two repeaters. Then
unused repeater channels can be used for normal simplex or
direct radio-to-radio communications.
To select Duplex on individual channels
1. Select the required channel 1-8.
2. Briefly press the DUP
display accompanied by a high beep.
To remove Duplex from a channel
on the display.
2. Briefly press the DUP
display accompanied by a low beep.
PRIORITY CHANNEL
40 channels in the TX3220 as a priority channel that can be
instantly recalled at the press of a key. This can be used to
provide instant access to your working channel or your local
repeater channel.
To store a Priority channel
1. Select the required channel.
hold the PRI key. The channel display will
flash for a moment then a high beep will be heard as the
selected channel is stored.
To recall a Priority channel
Briefly press the PRI key. The TX3220 will immediately
SCANNING
The TX3220 has a Scan function that allows groups of user
programmable channels to be scanned for activity. Channels
channel is found, scanning will pause to allow the signal to
be heard. Once the channel has been clear for 5 seconds,
scanning will resume automatically.
Scan Groups
The TX3220 has two available Scan groups - Open Scan
and Group Scan.
Open Scan allows any of the channels to be scanned
found, the scan will pause to allow the signal to be heard.
Once the channel has been clear for 5 seconds scanning will
resume automatically.
e.g. Scanning channels 1-40 in Open Scan
Group Scan allows you to transmit and receive normally
conversation the radio will scan and listen to several other
channels ONLY WHILE THERE ARE NO SIGNALS ON
THE PRIORITY CHANNEL.
1 - 2 - 3 - 4 - . . . . . . . . . . - 39 - 40
Channel Selected 12345*678
Receive Channel 12345*678
Transmit Channel 31 32 33 34 35* 36 37 38
over those received on the other channels.
e.g. Scanning channels 1-8 with priority channel 20
in Group Scan
Selecting a Scan Group
To select between Open or Group Scan:
1. Switch the TX3220 OFF.
hold the SCAN key while switching the
TX3220 ON.
3. Release the SCAN key. The currently selected scan
group will be displayed as ‘OS’ for Open Scan or ‘GS’
for Group Scan.
Rotate the channel selector clockwise or counter-
clockwise to change the scan group.
To exit and return to normal operation:
Switch the TX3220 OFF, then ON again.
Programming Open Scan Memories
To add or remove channels from the scan memory:
briefly press the SCAN key to cancel the scan function.
2. Select the required channel using the rotary channel
selector.
number, the selected channel is presently in the scan
SCAN key
in until a low beep is heard. ‘M’ will then disappear
indicating the channel is no longer in memory.
number, then the selected channel is not in the
memory. To add it, hold the SCAN key in until a high
beep is heard. ‘M’ will now appear to the upper left
of the channel number.
3. Repeat step 2 to add or remove other channels in the
scan memory.
To scan the selected channels:
Briefly press the SCAN key. A high beep will be heard,
’will appear in the display and the radio will
begin scanning.
Note:
open scan memory when you press the SCAN key, a low
beep will be heard and the command will be ignored.
To Scan in Open Scan Mode:
channel to allow the signal to be heard and will remain
there for as long as the channel remains busy.
SCAN
key twice.
press the PTT
When you have finished transmitting and the channel
has remained silent for 5 seconds scanning will
resume automatically.
SCAN key. A low
display. The radio will return to the last selected channel.
Programming Group Scan Memories
The Group Scan feature uses your priority channel as the
working channel. The rest of the channels you wish to scan
are programmed into the scan memory.
To program your Priority Channel:
1. Select the required channel.
hold the PRI key. The channel display will
flash for a moment then a high beep will be heard as
the selected channel is stored.
To program your scan channels:
press the SCAN key to cancel the scan function.
2. Select the required channel using the rotary channel
selector switch.
number, the selected channel is presently in the scan
holding the SCAN key
in until a low beep is heard. ‘M’ will then disappear
indicating the channel is no longer in memory.
number, then the selected channel is not in the
memory. To add it, hold the SCAN key in until a high
beep is heard. ‘M’ will now appear to the upper left
of the channel number.
3. Repeat step 2 to add or remove other channels in the
scan memory.
To scan the selected Group Scan channels:
Briefly press the SCAN key. A high beep will be heard,
begin scanning.
Note:
scan memory when you press the SCAN key, a low beep
will be heard and the command will be ignored.
1 - 2 - 3 - 4 - 20 - 5 - 6 - 7 - 8 - 20
Scanning in Group Scan Mode.
The Group Scan feature scans all the channels programmed
into the scan memory, with the priority channel being
scanned after every fourth channel.
‘lock’ onto it and remain there for as long as the channel
is busy, and for 5 seconds after the channel has cleared,
a series of small ‘breaks’ in the reception of the ‘locked’
will resume scanning.
(even when locked on a scan channel) the receiver will
for 5 seconds, the radio will resume scanning the
other channels.
SCAN
key twice.
mode simply press the PTT button on the microphone.
When you have finished your conversation and there
seconds, the radio will resume scanning
the other channels.
To exit directly to the Priority Channel, press the
PRI key. Scan will be cancelled.
To hold onto a busy scan channel, briefly press the
SCAN key while the channel is busy. The radio will exit
SCAN again to continue scanning.
To cancel the Scan mode, briefly press the SCAN key.
will remain on that channel, otherwise it will return to
the priority channel.
Note: The radio will not scan if the Squelch is open.
TIME-OUT TIMER
The TX3220 has a built-in time-out timer which
automatically disables the transmitter if the PTT switch
is pressed for too long. This feature prevents the channel
from being blocked for long periods should your push-to-
talk switch become jammed or pressed accidentally. The
time-out period is set to two minutes by default, but can be
changed or even disabled by your retailer.
CTCSS
CTCSS (Continuous Tone Coded Squelch System) is a
squelch quieting system that uses one of 50 preset sub-
audible (very low frequency) tones to open and close the
squelch on your radio. The system applies a continuous
low level tone to your transmission, and a matching tone
decoder to your receiver’s squelch. When CTCSS is enabled,
the channel remains quiet until someone transmits using
the selected tone. When the transmission ends, the channel
becomes quiet again. By using different tones, several
groups of people can share the same channel without
disturbing each other.
Your TX3220 allows CTCSS to be enabled or disabled on
used is user programmable.
When CTCSS is first enabled, it must be set up as follows:
To enable CTCSS on your radio
Use the following procedure:
1. Switch the TX3220 OFF at the volume control.
hold the SQL while turning the radio ON
’and ‘BUSY’ will be flashing to indicate
you are now setting the receive tone. The channel
number will now correspond to one of 50 different
CTCSS tones as shown in the table below. The factory
default is 00 (Tone Off).
3. To select the desired receive CTCSS tone, rotate
the channel selector until the required tone number
is displayed.
hold the SQL key. The display will flash and
a high beep will be heard as the receive tone is stored.
Note: Adjusting the receiver CTCSS tone automatically sets
the transmit CTCSS tone to the same frequency.
step 5 below, otherwise go to step 7.
SQL key to select the desired
the default transmit tone will be the same as the receive
tone you set in step 3 above.
channel selectorSQL key to store
the tone.
OFF then ON again to return to
normal operation.
Note: To disable the sending or receiving of CTCSS tones,
are set to 00, the CTCSS function is disabled and can not
be selected.
To enable the CTCSS function on a channel
1. Select the required channel.
hold the SQL key until a high beep is heard.
You may activate CTCSS on as many channels as you wish
except channels 1-8 (CTCSS is automatically disabled on
repeater channels and the emergency channel 5 where
ACMA regulations require that CTCSS be disabled).
To de-activate CTCSS
Repeat the steps above. A low beep will be heard and
Optional Microphone MC503B
CTCSS TONE FREQUENCY CHART
Tone No. Frequency Hz. Tone No. Frequency Hz. Tone No. Frequency Hz. Tone No. Frequency Hz.
00 0 13 100.0 26 156.7 39 196.6
01 67.0 14 103.5 27 159.8 40 199.5
02 69.4 15 107.2 28 162.2 41 203.5
03 71.9 16 110.9 29 165.5 42 206.5
04 74.4 17 114.8 30 167.9 43 210.7
05 77.0 18 118.8 31 171.3 44 218.1
06 79.7 19 123.0 32 173.8 45 225.7
07 82.5 20 127.3 33 177.3 46 229.1
08 85.4 21 131.8 34 179.9 47 233.6
09 88.5 22 136.5 35 183.5 48 241.8
10 91.5 23 141.3 36 186.2 49 250.3
11 94.8 24 146.2 37 189.9 50 254.1
12 97.4 25 151.4 38 192.8
Channel Up
Skip
INSTALLATION
The TX3220 is supplied with a slim, slide-on mounting
cradle. The cradle can be screwed or bolted in any
convenient location in your vehicle (under or above the
dash, on the centre console, etc) using the mounting slots
provided in the base. For maximum sound output from the
internal speaker, we recommend the cradle be mounted
above the radio to minimise any obstruction of the speaker.
Console Mounting
MBD001 is available as an
optional accessory. The adapter includes mounting brackets
and a specially designed front panel escutcheon to suit most
vehicle installations. See your nearest GME retailer
for details.
When installing the cradle
Avoid mounting close to heaters or air conditioners. Screw
the mounting cradle to a firm surface and slide the TX3220
into the cradle from the front until it clicks into place.
Finally, connect the power lead and antenna cable to the
sockets provided at the rear of the radio.
Mounting the Cradle
Din Adapter MBD001
Fitting the Radio
Slide radio fully into cradle until it clicks into place.
Removing the Radio
Fitting the Microphone
The microphone uses a miniature 6 pin telephone style plug
and socket. To fit the microphone:
downwards, and press the plug into the socket until
it ‘clicks’.
2. Gently press the rubber strain relief into the hole
surrounding the socket so that the slot around the
strain relief fits neatly inside the lip of the hole.
Slide radio
from cradle
Gently
spread
tabs
Gently
spread
tabs
SQL
Removing the Microphone
1. Squeeze the rubber strain relief near the front panel to
disengage the slot, and slide the strain relief back along
the microphone cord.
2. Squeeze the plastic tab on the microphone plug towards
the plug to unlock it while gently pulling the plug
has not released correctly and should be squeezed again.
DC POWER CONNECTION
installations only (i.e. where the negative terminal of the
battery is connected to the chassis or frame of the vehicle).
There are two recommended methods of installation.
Radio remains ON when
the ignition switch is OFF
Connect the radio’s negative (black) lead to the vehicle’s
chassis, or if preferred, directly to the battery’s negative
terminal. The radio’s positive (red) lead should be connected
via the 2 Amp fuse to the battery’s positive terminal.
Alternatively, the positive lead could be connected into
the fuse box at a point that has +13.8 Volts continuously
available (on the battery side of the ignition switch) via the
2 Amp fuse.
Radio turns ON and OFF
with the ignition switch
Connect the radio’s negative (black) lead to the vehicle’s
chassis, or if preferred, directly to the battery’s
negative terminal.
The radio’s positive (red) lead should connect to an
accessory point in the vehicle’s fuse box via the 2 Amp fuse.
Radio turns ON and OFF with Ignition Switch
To TX3220
Car Battery
Fuse
Chassis
RED
BLACK
Radio remains ON when Ignition Switch is OFF
To TX3220
Car Battery
Fuse
Chassis
RED
BLACK
+ve
Acc
Ign
+ve
Acc
Ign
This point should supply +13.8 Volts only when the ignition
2 Amp fuse.
HIGH VOLTAGE WARNING
The TX3220 has a built-in, high voltage detection system to
warn you if an overvoltage situation occurs.
channel display will flash ‘hi dc’ for 5 seconds when the
unit is first turned on, or at the time the voltage exceeds
will flash and the transmitter will select low output power.
TX3220 OFF and disconnect it from the power source,
before locating the cause of the trouble.
Once the High Voltage warning has been triggered, and you
have fixed to source of the problem, you will need to switch
The power source must not exceed 30 Volts.
ANTENNA CONNECTION
GME supply a wide range of mobile and base station
antennas designed specifically for UHF CB communications.
The antennas are fitted with a PL259 coaxial plug suitable
for connection to the antenna socket on the rear panel of
the radio.
Extension Speaker
UHF Aerial
Antenna Socket
Coax Cable
Fuse
UHF CHANNELS AND FREQUENCIES
Channel Frequency Usage Channel Frequency Usage
01 476.425 Repeater (1) RX 21 476.925 Simplex
02 476.450 Repeater (2) RX 22 476.950 Telemetry Use (RX) Only
03 476.475 Repeater (3) RX 23 476.975 Telemetry Use (RX) Only
04 476.500 Repeater (4) RX 24 477.000 Simplex
05 476.525 * Emergency Call (5) RX 25 477.025 Simplex
06 476.550 Repeater (6) RX 26 477.050 Simplex
07 476.575 Repeater (7) RX 27 477.075 Simplex
08 476.600 Repeater (8) RX 28 477.100 Simplex
09 476.625 Simplex 29 477.125 Simplex
10 476.650 Simplex 30 477.150 Simplex
11 476.675 # General Calling 31 477.175 Repeater (1) TX
12 476.700 Simplex 32 477.200 Repeater (2) TX
13 476.725 Simplex 33 477.225 Repeater (3) TX
14 476.750 Simplex 34 477.250 Repeater (4) TX
15 476.775 Simplex 35 477.275 * Repeater (5) TX
16 476.800 Simplex 36 477.300 Repeater (6) TX
17 476.825 Simplex 37 477.325 Repeater (7) TX
18 476.850 Simplex 38 477.350 Repeater (8) TX
19 476.875 Simplex 39 477.375 Simplex
20 476.900 Simplex 40 477.400 + Road Channel
# Reccomme nded channel for general calling.
+ Highway information (truckies) channel.
REPEATERS
A repeater system consists of a linked transmitter/receiver
combination installed in a prominent location. The repeater
is designed to receive signals on a designated channel and
re-transmit them on another channel.
Repeaters are usually located on hills, mountains or tall
buildings. The increased elevation greatly improves the
range of the repeater beyond that of a normal base or
mobile. This means that the repeaters are able to receive
and retransmit signals to radios that would otherwise be out
of range of each other.
communicate through repeaters, your radio must be able
to transmit and receive on different channels (known as
operate through repeaters.
are the channels that have been designated for repeater use.
selected channel (e.g. channel 1) but automatically transmits
30 channels higher (i.e. channel 31). The UHF repeater
receives your signal on Channel 31 and retransmits it on
channel 1 for others to hear.
Simplex/Duplex Range Comparison
Simplex
Repeater
operation
Vechicle Vechicle
Channel 31
Channel 1
Channel 1
Channel 31
Repeater
Station
SPECIFICATIONS
ELECTRICAL
General
communications equipment
in the UHF citizen and personal
radio service.
Frequency Range TX: 476.425-477.400 MHz
Channel Spacing: 25 kHz
with repeater talk around.
Scanning Speed: 50 ms per channel
(20 channels per second).
5 seconds on receive.
The RF power is reduced
and TX flashes on transmit.
Reverse Voltage
Operating Temperature: -10°C to 60°C
Transmitter
RF Output: 5 Watts
Spurious Emission: < - 70 dBc
Frequency Error: < ± 1.5 kHz
Modulation: FM
AF limiting.
Transmit Frequency
Response: + 6 dB per octave
300 Hz to 3 kHz + 1-3 dB.
Current Consumption: 1.7 Amps with 50 Ohm
termination.
Receiver
Sensitivity: - 122 dBm for 12 dB
Selectivity: - 6 dB at + 7.5 kHz
- 72 dB at ± 25 kHz
Spurious Response
Receive Frequency
Response: - 6 dB/Octave de-emphasis
300 Hz to 3 kHz + 1-3 dB.
Current Consumption: < 205 mA muted
750 mA Full volume.
Conducted Spurious
Emission: < - 70 dBm
MECHANICAL SPECIFICATIONS & CONNECTIONS
Weight: 420 grams
connector in rear panel.
External Speaker: 3.5 mm Mono Jack
with rubber strain relief.
*Specifications are typical unless otherwise indicated and may be subject to change without notice or obligation.
WARRANTY
GME limit this warranty to the original purchaser of
the equipment.
GME warrant the TX3220 to be free from defects in
material and workmanship for a period of thirty six
(36) months from the date of purchase from their
authorised retailer.
GME warrant the microphone to be free from defects
in material and workmanship for a period of twelve
(12) months from the date of purchase from their
authorised retailer.
Should the product require servicing during this
period, all labour and parts used to effect repairs will
be supplied free of charge. GME reserve the right to
determine whether damage has been occasioned by
accident, misuse or improper installation whereby
the warranty would be void, including equipment
which has been damaged due to:
a battery or power supply or to an incorrect
supply voltage.
(b) Operation without an antenna or by
connection to an antenna which has been
incorrectly installed, resulting in damage
to the radio’s output circuit.
(c) Effects of water or moisture penetration.
of a defect occurring during the warranty period,
the original purchaser may return the defective
unit along with suitable proof of purchase date
(i.e. receipt, docket, credit card slip etc.) and a full
description of the defect to the retailer from whom
the unit was purchased. All freight charges incurred
for transportation by the retailer or GME are the
purchaser’s responsibility.
Your radio is especially designed for the environment
encountered in land mobile installations. The use of
all solid state circuitry, careful design and rigorous
testing, result in high reliability. Should failure occur
however, GME maintain a fully equipped service
facility and spare parts stock to meet the customer’s
requirements long after expiry of the warranty period.
Website:
www.gme.net.au
Head Office: SYDNEY
MELBOURNE ADELAIDE PERTH BRISBANE SYDNEY AUCKLAND
7 Mircro Circuit 14 Phillips St. Unit 1 Unit 1 Unit B Unit F
Dandenong South Thebarton 10-12 Harvard Way 89-101 Factory Rd. 22-24 College St. 35 Neilpark Dr.
Vic. 3165 S.A. 5031 Canning Vale Oxley Gladesville East Tamaki 2141
Tel: (03) 9798 0988 Tel: (08) 8234 2633 W.A. 6155 Qld. 4075 N.S.W. 2111 N.Z.
Fax: (03) 9798 0177 Fax: (08) 8234 5138 Tel: (08) 9455 5744 Tel: (07) 3278 6444 Tel: (02) 9879 8888 Tel: (09) 274 0955
Fax: (08) 9455 3110 Fax: (07) 3278 6555 Fax: (02) 9816 4722 Fax: (09) 274 0959
[email protected]
31021943117-3
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