Retevis RT66 User manual

Shenzhen Retevis Technology Co., Ltd
7/F, 13-C, Zhonghaixin Science & Technology Park, No.12 Ganli 6th Road,
Jihua Street, Longgang District, Shenzhen, China
Web: www.retevis.com
E-mail: [email protected]
Facebook: facebook.com/retevis
US RT66
Two Way Radio
User's Manual

CONTENT
01
GETTING ACQUAINTED
Battery Indicator
Monitor
Antenna
Channel Selector
Speaker
Power Switch/
Volume Control
TX/RX Indicator
Microphone
Earphone/Data
Cable Jack
Battery Pack
Push to Talk (PTT)
01
02
02
03
03
04
05
05
05
05
05
06
06
06
06
06
07
07
07
07
08
09
10
11
12
GETTING ACQUAINTED
UNPACKING AND CHECKING EQUIPMENT
Packing List
PREPARATION
Li-ion Battery Pack Precautions
Charging the Battery Pack
BASIC OPERATION
Switch Power On/Off
Adjusting the Volume
Selecting a Channel
Transmitting & Receiving
ADVANCED OPERATIONS
Wide/Narrow Bandwidth Selection
Time-Out Timer (TOT)
Battery Save
Channel Number Annunciation
Low Battery Alert
Compandor
Scrambler
CTCSS/DCS
CARE AND CLEANING
TROUBLESHOOTING GUIDE
CTCSS/DCS
CHANNEL AND FREQUENCIES
WARNING

0302
UNPACKING AND CHECKING EQUIPMENT
Packing List
Carefully unpack the transceiver. We recommend that you identify
the items listed in the following table before discarding the packing
material. If any items are missing or have been damaged during
shipment, file a claim with the carrier immediately.
Unit Transceiver
Battery Pack
Desktop Charger
Belt Clip
Hand Strap
User Manual
DESCRIPTION QUANTITY
2
2
2
2
2
1
PREPARATION
Li-ion Battery Pack Precautions
Do not short the battery terminals or dispose of the battery by
fire. Never attempt to remove the casing from the battery pack.
Keep the charging temperature always between 5*and 40*.
Do not use the transceiver while charging the battery pack.
We recommend you switch the transceiver power OFF while
charging is taking place.
Do not recharge the battery pack if it is already fully charged.
Doing so may cause the life of the battery pack to shorten or the
battery pack may be damaged.
Use the battery pack only for its intended purpose. Never use any
charger or battery pack that is damaged.
Do not short-circuit the battery. Accidental short-circuiting can
occur when a metallic object such as a coin, clip, or pen causes
direct connection of the positive (+) and negative (-) terminals
of the battery. This might happen, for example, when you carry
a spare battery pack in your pocket or purse. Short-circuiting the
terminals may damage the battery or the connecting object.

0302
UNPACKING AND CHECKING EQUIPMENT
Packing List
Carefully unpack the transceiver. We recommend that you identify
the items listed in the following table before discarding the packing
material. If any items are missing or have been damaged during
shipment, file a claim with the carrier immediately.
Unit Transceiver
Battery Pack
Desktop Charger
Belt Clip
Hand Strap
User Manual
DESCRIPTION QUANTITY
2
2
2
2
2
1
PREPARATION
Li-ion Battery Pack Precautions
Do not short the battery terminals or dispose of the battery by
fire. Never attempt to remove the casing from the battery pack.
Keep the charging temperature always between 5*and 40*.
Do not use the transceiver while charging the battery pack.
We recommend you switch the transceiver power OFF while
charging is taking place.
Do not recharge the battery pack if it is already fully charged.
Doing so may cause the life of the battery pack to shorten or the
battery pack may be damaged.
Use the battery pack only for its intended purpose. Never use any
charger or battery pack that is damaged.
Do not short-circuit the battery. Accidental short-circuiting can
occur when a metallic object such as a coin, clip, or pen causes
direct connection of the positive (+) and negative (-) terminals
of the battery. This might happen, for example, when you carry
a spare battery pack in your pocket or purse. Short-circuiting the
terminals may damage the battery or the connecting object.

04 05
Charging the Battery Pack
The battery pack is not charged at the factory, please charge it
before use. Initially charging the battery pack after purchase or
extended storage (greater than 2 months) will not bring the battery
pack to its normal operating capacity. After two or three complete
charge and discharge cycles. The full performance of battery will
be achieved.
1. Slide the battery pack or transceiver with a battery pack into the
desktop charger.
2. Make sure the battery pack contacts are in contact with the
charging terminals.
3. The charging LED lights red and charging begins.
4. After charging about 4 hours, when the light turns to green, it
means the battery pack is fully charged.
5. Then you can take off the battery pack or transceiver with the
battery pack and use it.
PREPARATION BASIC OPERATION
Switch Power On/Off
1. TurnOn:turnthe[Power]switchclockwisetoswitchthetransceiver
ON, an alert tone will be heard.
2. Turn Off: turn the [Power] switch counter clockwise to switch
the transceiver OFF.
Adjusting the Volume
Rotate the [Volume] control to adjust the volume. Clockwise
increases the volume and counter clockwise decreases it.
Selecting a Channel
Rotate the [Channel Selector] to choose your desired channel.
Clockwise increases the number and counter clockwise decreases
it. If the channel number annunciation is activated, the radio will
announce the current corresponding channel number. If none
channel has been programmed, it cannot be used. When a non-
programmed channel is selected, the LED indicator lights orange
and an alert tone sounds.
Transmitting & Receiving
1. Press the [PTT] switch and speak into the microphone in your
normal speaking voice, for best sound quality at the receiving
station, hold the microphone approximately 1~2 inches (2.5~
5 cm) from your mouth.
2. Release the [PTT] switch to receive.

04 05
Charging the Battery Pack
The battery pack is not charged at the factory, please charge it
before use. Initially charging the battery pack after purchase or
extended storage (greater than 2 months) will not bring the battery
pack to its normal operating capacity. After two or three complete
charge and discharge cycles. The full performance of battery will
be achieved.
1. Slide the battery pack or transceiver with a battery pack into the
desktop charger.
2. Make sure the battery pack contacts are in contact with the
charging terminals.
3. The charging LED lights red and charging begins.
4. After charging about 4 hours, when the light turns to green, it
means the battery pack is fully charged.
5. Then you can take off the battery pack or transceiver with the
battery pack and use it.
PREPARATION BASIC OPERATION
Switch Power On/Off
1. TurnOn:turnthe [Power] switch clockwise to switch the transceiver
ON, an alert tone will be heard.
2. Turn Off: turn the [Power] switch counter clockwise to switch
the transceiver OFF.
Adjusting the Volume
Rotate the [Volume] control to adjust the volume. Clockwise
increases the volume and counter clockwise decreases it.
Selecting a Channel
Rotate the [Channel Selector] to choose your desired channel.
Clockwise increases the number and counter clockwise decreases
it. If the channel number annunciation is activated, the radio will
announce the current corresponding channel number. If none
channel has been programmed, it cannot be used. When a non-
programmed channel is selected, the LED indicator lights orange
and an alert tone sounds.
Transmitting & Receiving
1. Press the [PTT] switch and speak into the microphone in your
normal speaking voice, for best sound quality at the receiving
station, hold the microphone approximately 1~2 inches (2.5~
5 cm) from your mouth.
2. Release the [PTT] switch to receive.

06 07
ADVANCED OPERATIONS ADVANCED OPERATIONS
Wide/Narrow Bandwidth Selection
You can select Wide/Narrow bandwidth via programming software,
the default setting is Wide.
Time-Out Timer (TOT)
The Time-Out Timer is used to prevent any caller from using a
channel for an extended period of time (OFF, 15~600 seconds). If
you continuously transmit for a period of time that exceeds the
programmed time, the transceiver will stop transmitting and an
alert tone will sound. To stop the tone, release the PTT switch.
Battery Save
The battery save function decreases the amount of power used
when signal is not being received and no operations are being
performed (no keys are being pressed and no switches are being
turned) for 5 seconds, the battery save function activates.
When a signal is received or an operation is performed, battery
save is disabled. The default setting is ON.
Channel Number Annunciation
Your dealer may have programmed channel number annunciation
on your transceiver. There are 3 kinds of the channel number
annunciation: "Chinese Male Voice, English Male Voice (Default
Setting), None". When you turn the [Channel Selector], the
transceiver sounds the current corresponding channel number.
Low Battery Alert
For extra convenience, if the battery level runs low, the transceiver
will sounds "do do do" at every 5 seconds, to alert the user to
recharge the battery. Please change new battery pack or charge
this battery pack.
Compandor
Activate this function for more clear audio output.
The default setting is OFF.
Scrambler
There are 8 groups of scramblers to select, when activated, any
other party listening on your channel is prevented from
eavesdroppimg your conversation. The default setting is OFF.
CTCSS/DCS
There are 50 CTCSS 105 DCS for selection, you can also define
your own CTCSS/DCS, or activate the DCS hopping feature, the
CTCSS/DCS is a sub-audible tone/code which allows you to
ignore (not hear) calls from other parties who are using the same
channel, when a channel is set up with a CTCSS/DCS, squelch will
only open when a call containing a matching tone or code is received.
Meanwhile, signals that you transmit will only be heard by parties
whose CTCSS/DCS signaling matches your transceiver.

06 07
ADVANCED OPERATIONS ADVANCED OPERATIONS
Wide/Narrow Bandwidth Selection
You can select Wide/Narrow bandwidth via programming software,
the default setting is Wide.
Time-Out Timer (TOT)
The Time-Out Timer is used to prevent any caller from using a
channel for an extended period of time (OFF, 15~600 seconds). If
you continuously transmit for a period of time that exceeds the
programmed time, the transceiver will stop transmitting and an
alert tone will sound. To stop the tone, release the PTT switch.
Battery Save
The battery save function decreases the amount of power used
when signal is not being received and no operations are being
performed (no keys are being pressed and no switches are being
turned) for 5 seconds, the battery save function activates.
When a signal is received or an operation is performed, battery
save is disabled. The default setting is ON.
Channel Number Annunciation
Your dealer may have programmed channel number annunciation
on your transceiver. There are 3 kinds of the channel number
annunciation: "Chinese Male Voice, English Male Voice (Default
Setting), None". When you turn the [Channel Selector], the
transceiver sounds the current corresponding channel number.
Low Battery Alert
For extra convenience, if the battery level runs low, the transceiver
will sounds "do do do" at every 5 seconds, to alert the user to
recharge the battery. Please change new battery pack or charge
this battery pack.
Compandor
Activate this function for more clear audio output.
The default setting is OFF.
Scrambler
There are 8 groups of scramblers to select, when activated, any
other party listening on your channel is prevented from
eavesdroppimg your conversation. The default setting is OFF.
CTCSS/DCS
There are 50 CTCSS 105 DCS for selection, you can also define
your own CTCSS/DCS, or activate the DCS hopping feature, the
CTCSS/DCS is a sub-audible tone/code which allows you to
ignore (not hear) calls from other parties who are using the same
channel, when a channel is set up with a CTCSS/DCS, squelch will
only open when a call containing a matching tone or code is received.
Meanwhile, signals that you transmit will only be heard by parties
whose CTCSS/DCS signaling matches your transceiver.

08 09
To guarantee optimal performance as well as a long service lift
of your radio, please follow the tips below.
- Keep your radio dry. Rain, moisture and liquid or water may
contain mineral substance that can corrode the electronic circuit.
- Take out the battery when the radio is wet, install the battery
pack when it is completely dry.
- Keep away the radio from hot place. High temperature may
cause electrical instrument working life shorten, battery pack
damaged and plastic component deformation or dissolved.
- Do not throw, knock or shock the radio. Use it rudely may damage
internal circuit board and accurate structure.
- Do not use any strong chemicals, cleaner of detergent to clean
the radio.
- Do not paint the radio. Painting may block the demountable
component to influence normal operation.
- Do not hold the radio by its antenna or headset cable directly.
- Use supplied or approved antenna when change antenna.
Unapproved antenna, modified accessories may damage the
radio and violate the relevant rules.
- Attach the accessory jack cover when the radio is not in use.
- Make a back-up copy (like frequencies and channels.) before you
take your radio to service center.
Note : Every tip above are all applicable for your radio, battery pack,
desktop charger and accessories. Consult your dealer or take your
radio to nearest service center if any parts cannot work normally.
TROUBLESHOOTING GUIDECARE AND CLEANING
SOLUTION
No power.
Battery power
dies shortly after
charging.
Cannot talk to or
hear other members
in your group.
Other voices (besid-
es group members)
are present on the
channel.
PROBLEM
The battery pack may be dead.
Recharge or replace the battery pack.
The battery pack may not be installed
correctly. Remove the battery pack
and install it again.
The battery pack life is finished.
Replace the battery pack with a new
one.
Make sure you are using the same
frequency and CTCSS/DCS as the
other members in your group.
Other group members may be too far
away. Make sure you are within range
of the other transceivers.
Change the CTCSS/DCS setting. Be
sure to change the tone on all trans-
ceiver in your group.

08 09
To guarantee optimal performance as well as a long service lift
of your radio, please follow the tips below.
- Keep your radio dry. Rain, moisture and liquid or water may
contain mineral substance that can corrode the electronic circuit.
- Take out the battery when the radio is wet, install the battery
pack when it is completely dry.
- Keep away the radio from hot place. High temperature may
cause electrical instrument working life shorten, battery pack
damaged and plastic component deformation or dissolved.
- Do not throw, knock or shock the radio. Use it rudely may damage
internal circuit board and accurate structure.
- Do not use any strong chemicals, cleaner of detergent to clean
the radio.
- Do not paint the radio. Painting may block the demountable
component to influence normal operation.
- Do not hold the radio by its antenna or headset cable directly.
- Use supplied or approved antenna when change antenna.
Unapproved antenna, modified accessories may damage the
radio and violate the relevant rules.
- Attach the accessory jack cover when the radio is not in use.
- Make a back-up copy (like frequencies and channels.) before you
take your radio to service center.
Note : Every tip above are all applicable for your radio, battery pack,
desktop charger and accessories. Consult your dealer or take your
radio to nearest service center if any parts cannot work normally.
TROUBLESHOOTING GUIDECARE AND CLEANING
SOLUTION
No power.
Battery power
dies shortly after
charging.
Cannot talk to or
hear other members
in your group.
Other voices (besid-
es group members)
are present on the
channel.
PROBLEM
The battery pack may be dead.
Recharge or replace the battery pack.
The battery pack may not be installed
correctly. Remove the battery pack
and install it again.
The battery pack life is finished.
Replace the battery pack with a new
one.
Make sure you are using the same
frequency and CTCSS/DCS as the
other members in your group.
Other group members may be too far
away. Make sure you are within range
of the other transceivers.
Change the CTCSS/DCS setting. Be
sure to change the tone on all trans-
ceiver in your group.

10 11
1 - 67.0 11 - 94.8 21 - 131.8 31 - 171.3 41 - 203.5
2 - 69.3 12 - 97.4 22 - 136.5 32 - 173.8 42 - 206.5
3 - 71.9 13 - 100.0 23 - 141.3 33 - 177.3 43 - 210.7
4 - 74.4 14 - 103.5 24 - 146.2 34 - 179.9 44 - 218.1
5 - 77.0 15 - 107.2 25 - 151.4 35 - 183.5 45 - 225.7
6 - 79.7 16 - 110.9 26 - 156.7 36 - 186.2 46 - 229.1
7 - 82.5 17 - 114.8 27 - 159.8 37 - 189.9 47 - 233.6
8 - 85.4 18 - 118.8 28 - 162.2 38 - 192.8 48 - 241.8
9 - 88.5 19 - 123.0 29 - 165.5 39 - 196.6 49 - 250.3
10 - 91.5 20 - 127.3 30 - 167.9 40 - 199.5 50 - 254.1
DCS Standard Group Number
CTCSS Standard Frequency Table
CTCSS/DCS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CHANNEL
CHANNEL AND FREQUENCIES
FREQUENCY CTCSS/DCS POWER
462.5625
462.5875
462.6125
462.6375
462.6625
462.6250
462.7250
462.6875
462.7125
462.5500
462.5750
462.6000
462.6500
462.6750
462.7000
462.7250
67.0
118.8
127.3
131.8
136.5
127.3
136.5
141.3
146.2
123.0
D7431
D3321
D2431
D606N
D731I
D462I
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
023
025
026
031
032
036
043
047
051
053
054
065
071
072
073
074
114
115
116
122
125
131
132
134
143
145
152
155
156
162
165
172
174
205
212
223
225
226
243
244
245
246
251
252
255
261
263
265
266
271
274
306
311
315
325
331
332
343
346
351
356
364
365
371
411
412
413
423
431
432
445
446
452
454
455
462
464
465
466
503
506
516
523
526
532
546
565
606
612
624
627
631
632
645
654
662
664
703
712
723
731
732
734
743
754

10 11
1 - 67.0 11 - 94.8 21 - 131.8 31 - 171.3 41 - 203.5
2 - 69.3 12 - 97.4 22 - 136.5 32 - 173.8 42 - 206.5
3 - 71.9 13 - 100.0 23 - 141.3 33 - 177.3 43 - 210.7
4 - 74.4 14 - 103.5 24 - 146.2 34 - 179.9 44 - 218.1
5 - 77.0 15 - 107.2 25 - 151.4 35 - 183.5 45 - 225.7
6 - 79.7 16 - 110.9 26 - 156.7 36 - 186.2 46 - 229.1
7 - 82.5 17 - 114.8 27 - 159.8 37 - 189.9 47 - 233.6
8 - 85.4 18 - 118.8 28 - 162.2 38 - 192.8 48 - 241.8
9 - 88.5 19 - 123.0 29 - 165.5 39 - 196.6 49 - 250.3
10 - 91.5 20 - 127.3 30 - 167.9 40 - 199.5 50 - 254.1
DCS Standard Group Number
CTCSS Standard Frequency Table
CTCSS/DCS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CHANNEL
CHANNEL AND FREQUENCIES
FREQUENCY CTCSS/DCS POWER
462.5625
462.5875
462.6125
462.6375
462.6625
462.6250
462.7250
462.6875
462.7125
462.5500
462.5750
462.6000
462.6500
462.6750
462.7000
462.7250
67.0
118.8
127.3
131.8
136.5
127.3
136.5
141.3
146.2
123.0
D7431
D3321
D2431
D606N
D731I
D462I
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
High
023
025
026
031
032
036
043
047
051
053
054
065
071
072
073
074
114
115
116
122
125
131
132
134
143
145
152
155
156
162
165
172
174
205
212
223
225
226
243
244
245
246
251
252
255
261
263
265
266
271
274
306
311
315
325
331
332
343
346
351
356
364
365
371
411
412
413
423
431
432
445
446
452
454
455
462
464
465
466
503
506
516
523
526
532
546
565
606
612
624
627
631
632
645
654
662
664
703
712
723
731
732
734
743
754