Uniden America Corporation UT042 Manuale Utente

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LIQUID CRYSTAL DISPLAY

19

•  15 GMRS / 7 FRS Channels

•  142 Privacy Codes (CTCSS Tone 

  and DCS Code)

•  Up to 28 Mile Range*

• Submersible design

• Direct Call

•  143 Group Codes

• Silent Mode

•  10 Selectable Call/Ring Tone Alerts

•  Backlit LCD Display

• Roger Beep

• Vibrate Reminder

 (GMR2875 Only)

1 Antenna
2  PTT (Push-To-Talk) Button
3  Power Boost Button
4 Monitor 

Button

5  Channel Up/Down Key
6 Tone/Group 

Key

7 D-call 

Key

8 Menu/Power 

key

9  Volume Up/Down key
10 Enter/Lock Key
11 Weather/Alert Key
12 Microphone

13 Speaker
14  Battery Level Indicator
15 Sub Code Indicator
16 Alert Indicator
17 Group Indicator
18 Receive Indicator
19 Call Indicator
20 Channel Indicator
21 Missed Call Indicator
22 Charging Contacts

Congratulations on your purchase of the Uniden 

GMR2872-2CK/GMR2875-2CK (General Mobile 

Radio Service) waterproof radio. This lightweight, 

palm-sized, radio is a state-of-the-art device, 

equipped with many valuable features. Use it at 

sporting events, to stay in contact with family and 

friends, hiking, skiing, outdoors, or in a 

neighborhood watch for vital communication - even 

outside by the pool!

After your radio is submerged in water, you might 

notice that the sound is distorted. This is because 

there is still water remaining in and around the 

speaker and microphone. Just shake the radio to 

clear excess water, and the sound should return to 

normal.

Note: If your radio is exposed to salt water, clean 

Your package contains two radios, two rechargeable 

NiMH battery packs (#BP38), one AC adapter (#AD-

314), one charging cradle (#RC1282), two belt clips 

and this reference guide. You can operate the unit 

using the rechargeable NiMH battery pack. 

To order the following optional accessories, visit our 

web site @www.uniden.com or call 1-800-554-3988 

during business hours.

Use only Uniden accessories.
•  NiMH Battery Pack - #BP38
•  Charging Cradle - #RC1282
•  AC Adapter - #AD-314

Your radio uses a supplied NiMH battery pack.

To install the NiMH battery pack:
1) Make sure the radio is off.
2) Turn the screw holding the battery compartment 

counterclockwise with a screwdriver, and hold 
up the battery cover.

3) Put the NiMH battery pack in the battery 

compartment applying the battery contacts to 
the lower charge contacts. Be sure to follow the 
instructions written on the battery pack’s label. 
Installing the battery pack incorrectly will prevent 
the unit from operating.

4)  Before placing the battery cover back on the 

radio, check the rubber seal around the battery 
compartment and the ribbon of the battery pack 
: make sure that the seal is in good condition 
and that there is no foreign matter under the 
seal. 

5) Replace the battery compartment door. Tighten 

the screws securely.

Note: If the rubber seal appears warn, nicked, or 
dried out, replacement seals are available from 
www.uniden.com or call 1-800-554-3988 during 
business hours.

This radio has a battery level meter that indicates 

the status of the batteries. When the battery level is 

low, the battery level meter icon 

 flashes and 

then BATT appears after 30 seconds. Recharge 

the NiMH battery pack immediately.
Warning!  To avoid the risk of personal injury or 

Your radio includes charging cradle and 

rechargeable battery packs. Follow these 

instructions to recharge the radios in a charging 

cradle.

Using the Charging Cradle
1) Connect the adapter's plug to DC IN 9V jack of 

the charging cradle and plug the other end into 

an AC outlet.

In order to get the most out of your new radio, read 

this reference guide completely before attempting to 

operate the unit.
Turning the Radio On and Adjusting the Volume
1) Press and hold the MENU/   to turn the radio 

ON.

2) To change the volume level, press the 

VO 

 or   to increase or decrease the volume 

level then press ENTER/  .

3) Press and hold the MENU/   to turn the radio 

OFF.

Choosing a Channel
Your radio has 22 channels and 142 Privacy codes 

you can use to talk to others. In order to speak to 

someone, both your radios must be set to the same 

channel and Privacy code.
To choose a channel:
Press CH 

 or   to increase or decrease the 

channel number displayed.

•  To change the channel continuously, press 

CH 

 or  , then repeatedly press and hold 

CH 

 or   for more than 1 second.

Note: Channels 1-7 and 15-22 have a typical range 

HI is displayed when you select a GMRS channel, 

and LO is displayed when you select a FRS 

2) Set the charging cradle on the desk or tabletop, 

and place the radio in the charging cradle with 

the keypad facing forward.

3) Make sure that the LED illuminates. Charge the 

battery pack for 16 hours and remove the radio 

from the charging cradle after charging.

Note: 
•  Charge time may vary depending on the battery 

Warrning!:  
•  The charging cradle is not waterproof. If the 

In order to use Group Mode you need to initialize 

a couple of settings in your radio:

•  Set the radio to Group Mode
•  Set a Group Code
•  Set a Unit Number
•  Set a "Nickname"

Setting the Radio to Group Mode
To set the radio to Group Mode, which enables 

Direct Call, Auto Channel Change and All Call, 

press and hold TONE/GROUP for 2 seconds. The 

radio displays GRP and group code.

Note: In group mode, you cannot receive 

Setting the Group Code
Set the group code for your radio group from 

0-142. Everyone in your group must select the 

same group code in order to communicate with 

each other.

1) Tap TONE/GROUP in group mode. Press 

CH 

 or   to select the group number.

2) Press ENTER/   or TONE/GROUP to return to 

normal operation.

Setting the Unit Number
Each radio in your group needs to be set to a 

unique unit number, from 1-16.

1) Press MENU/  . Advance through the menu 

until UNIT appears, and then press ENTER/   . 

The current unit number flashes.

2) Press CH 

 or   to select the desired unit 

number.

3) Press ENTER/   to continue to the next 

section.

Setting Your Nickname
Your nickname appears on other units’ displays 

when you make a All Call or direct call. This is 

also the name that appears on other radio displays 

when someone wants to make a direct call to you. 

When no nickname is set, the unit number 

appears.

1) Press MENU/  . Advance through the menu 

until UNIT appears, and then press ENTER/  . 

The current unit number flashes, then tap 

ENTER/  . The radio displays n - - - - (or your 

current nickname) with the first place in the 

nickname flashing.

2) Press CH 

 or   to select the letter, then 

ENTER/   to advance to the next letter until you 

have entered your nickname.

3) Press MENU/   to confirm the setting and exit 

the menu.

Using Group Mode
Group mode lets you make direct calls to other 

people in your group without alerting the entire 

group and also lets you quickly change everyone in 

your group to another channel from a single radio. 

Before using group mode, follow the instructions in 

"Setting Up Group Mode" on every radio in your 

group. Then, to record the unit ID and everyone’s 

nickname in every radio, send a call to "All" from 

each radio one time (see "Sending a Direct Call").

Sending a Direct Call
Direct Call lets you call everyone in your group at 

once, or call a single person in your group without 

anyone else in the group knowing. It is like a 

"speed dial" directly to the person(s) you want to 

talk to.

To call everyone in your group, press D CALL in 

group mode. The radio flashes ALL. Then, press 

D CALL or ENTER/  . Everyone in your group 

receives a call "chirp" for about 3 seconds. When 

the chirp ends, begin your conversation.

Note: When you make a direct call to "all," your 

To call one person in your group, without having 

other people know, press D CALL in group mode. 

Then, use CH 

 or   to select the person you 

want to call and press D CALL or ENTER/  . Your 

radio sounds tones for 3 seconds as it sends the 

call. When the selected person answers, you can 

begin your conversation. You can silence the call 

tones at any time by pressing PTT or Power 

boost.

Your conversation remains private between you 

and the person you called until 15 seconds after 

your last conversation. Then, your radio 

automatically exits private mode.

Automatically Changing Channels
Auto Channel Change lets you easily coordinate a 

channel change for everyone in your group. You 

might want to do this when you find you are getting 

a lot of interference on your current channel. Or, 

you can use this feature to change from a low-

power channel (8-14) to one of the high-powered 

channels (1-7, 15-22) if you need more range (or to 

a low-power channel if you need longer battery 

life).

Use the radio in standard (not group) mode when 

you need to be able to communicate with radios 

that do not have the group feature.

Choosing a Privacy Code
You can select a Privacy Code from 1-142 for each 

channel. oFF (OFF) indicates no Privacy code 

selected and your radio can receive a signal 

regardless of the code settings of the transmitting 

radio.

1) Press TONE/GROUP. The Privacy code 

indicator flashes.

2) Press CH 

 or   to increase or decrease the 

code. You can also select oFF.

3) Press ENTER/   or TONE/GROUP to return to 

normal operation.

Note: Only tones 1-38 are standard across radio 

Channel Scan Feature
Your radio has a channel scan feature that lets you 

easily scan all 22 channels. When an active 

channel is detected, the radio pauses on that 

channel until the channel is clear. Then after a 

2-second delay, the radio resumes scanning. 

Pressing PTT or Power boost while the scan is 

paused on a channel lets you transmit on that 

channel.

To turn on channel scan:
Press MENU/  . The radio displays SCAN, and 

then press ENTER/  .The channel number 

changes as the radio rapidly cycles through the 

channels.
To turn off channel scan:
Press MENU/  , PTT, Power boost, D CALL or 

WX/ALERT.

To talk to others using the radio:
1) Press and hold PTT or Power boost and speak 

in a clear, normal voice about 2-3 inches away 

from the microphone. While you transmit, TXHI 

or TXLO appears on the display according to 

the type of channel. To avoid cutting off the first 

part of your transmission, pause slightly after 

pressing PTT or Power boost before you start 

talking.

2) When you finish speaking, release PTT or 

Power boost. You can now receive incoming 

calls. While receiving, RX appears on the 

display.

Note: When you press Power boost, BOOS 

Monitor Mode Feature
Your radio lets you listen for weak signals on the 

current channel at the press of a key.

To turn on the Monitor Mode:
•  For brief listening, press MON. MON appears 

and RX flashes.

•  Press and hold MON for 2 seconds until two 

beeps sound for continuous listening. The 
receiver circuit stays open, so you hear both the 
noise and weak signals.

To turn off Monitor Mode:
Press MON to return to the previous mode. MON 

and RX disappear.

Navigating through the Normal Menu
To access the advanced features of your radio has 

a Menu function. In order to use Auto Channel 

Change, you need to set your radio to Group 

Mode.

1) To enter the menu, press MENU/  .

2) Additional presses of MENU/   advances you 

through the menu. After the last menu item, the 

radio exits to the previous mode.

3) Other ways to exit the Menu function are:

 a. Press PTT, Power boost, MON, D CALL, 

WX/ALERT or TONE/GROUP.

 b. Wait 10 seconds until the radio automatically 

returns to the previous mode.

Setting Silent Mode
When you turn on the silent mode, all incoming 

calls are muted: the radio flashes the display 

backlight, the channel indicator, SLNT and CALL 

to alert you to an incoming call. If you do not 

respond to the call within 15 seconds, the backlight 

turns off. The GMR2875 will also vibrate to remind 

you that you missed a call. Silent mode is disabled 

for 15 seconds when you transmit, receive, or 

press any other button.
To set the silent mode:
1) Enter the menu. Advance through the menu until 

the SLNT appears, then press ENTER/  . The 

current setting flashes.

2) Press CH 

 to display on, then press ENTER/ 

.

Note: To prevent unwanted silent alerts, be sure to 

Missed Call Alerts
If you receive an incoming call while silent mode is 

on and do not respond, the radio will turn on the 

Missed Call icon. If you are using the Group Mode, 

the radio will also indicate the person who made 

the call.

The GMR2875 will additionally remind you of a 

missed call by vibrating every minute after the call 

for 3 minutes.

Scan
Mode

Silent
Mode

Auto

Channel

Change

Call
Tone

Unit
Setting

Roger
Beep

Beep
Tone

Start
Scanning

ON-OFF

Channel
Change

1-10

Setting
Unit
Number

Setting
Nickname

ON-OFF ON-OFF

•  Power Boost Button for 

 Maximum Range

• All Call

•  Auto Channel Change Call

• Battery Charger

•  Battery Level Meter

• Channel Monitor

• Channel Scan

• Group Scan

• Keypad Lock

•  NOAA Emergency /

 Weather Channels

•  Emergency Weather Alert

To start an auto channel change, on any radio in 

the group tap MENU/  . Advance through the 

menu until CHCX appears, then press ENTER/  . 

The current channel flashes. Use CH 

 or   to 

select the target channel. You can check whether 

the selected channel is clear. Then press D CALL 

Your radio chirps for about 10 seconds while it 

sends out the channel change signal. As each 

radio receives the channel change signal, it chirps 

once, then changes to the new channel.

To ensure all radios make it to the new channel, 

we recommend you:

•  Make sure you are in an open environment, 

where the radio will get the best range.

•  Optimize range during the channel change 

signal by raising the radio over your head to 
give the best possible height.

•  Do a "roll call" on the new channel after the 

move to be sure no one was left behind. If you 
missed someone, return to the previous channel 
and issue the signal again.

Transmitting a Call Tone
Your radio is equipped with 10 selectable call tones 

that are transmitted when you press D CALL in 

standard mode. The selected tone will be also heard 

when someone places a direct call to you.
To select a call tone:
1) Enter the menu. Advance through the menu until 

CALL appears, then press ENTER/  . The 

current call tone number (1-10) flashes.

2) Press CH 

 or   to increase or decrease the 

number to the desired call tone. Each tone will be 

heard through the speaker.

To transmit the selected call tone, press D CALL. 

The selected tone is transmitted for a fixed length of 

time. Call Tone is cancelled if you press PTT or 

Power boost.

Roger Beep
Roger beep is a beep that is sent to notify the end 

of transmission. You can hear the roger beep can 

be heard through the speaker when both roger beep 

and Beep Tone are on. When roger beep is on and 

Beep Tone is off, you do not hear the roger beep, 

but it is transmitted to your party.
To adjusting the roger beep, enter MENU/  . 
Advance through the menu until RGR appears, then 
press ENTER/  . The current setting flashes.

To turn OFF roger beep:
Press CH   to display oF, then press ENTER/  .

To turn ON roger beep:
Press CH   to display on, then press ENTER/  .

Adjusting the Sound (Beep Tone)
Your radio sounds a beep each time you press a 

key (except for PTT and Power boost).

To adjusting the sound, enter MENU/  . Advance 

through the menu until TONE appears, then press 

ENTER/  . The current setting flashes.

To turn OFF this beep:

Press CH   to display oF, then press ENTER/  .

To turn ON this beep:

Press CH   to display on, then press ENTER/  .

Key Lock
Press and hold the ENTER/   until the LOCK 

appears. 

To exit Keylock on mode, press and hold ENTER/   

again.

•  While in keylock on mode, you can still use the 

 or  , PTT, Power 

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