Uniden Portable Radio GMR2838 2CK User Manual

Congratulations on your purchase of the Uniden  
GMR2838-2CK (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!  
2) Charge the battery pack for 16 hours until the  
battery indicator stops flashing.  
Adjusting the Sound (Key Beeps)  
Talking on Your Radio  
To select the VOX level:  
INSTALL THE BATTERY  
GMR2838-2CK  
Your radio emits a beep each time one of the keys  
(except for the PTT button and CALL key) is  
pressed. To turn this sound OFF, press and hold the  
1) Enter the Menu. Advance through the Menu until  
the vox icon appears on the display. The current  
level (OFF, 1-5) will be indicated. Level oF (OFF)  
disables VOX, while levels 1-5 set the sensitivity  
of the VOX circuit.  
To talk to others using the radio:  
Your radio uses a supplied NiMH battery pack.  
Using the Charging Cradle  
1) Connect the AC adapter (#AD-0001) to DC IN 9V CALL key while turning ON the radio. Repeat this  
1) Press and hold the PTT button and speak in a  
clear, normal voice about 2-3 inches away from  
the microphone. While you are transmitting, the  
icon appears on the display. To avoid cutting  
off the first part of your transmission, pause  
slightly after pressing the PTT button before you  
start talking.  
2) When you have finished speaking, release the  
PTT button. You can now receive incoming  
calls. While receiving, the  
the display.  
To install the NiMH battery pack:  
jack and to a standard 120V AC wall outlet.  
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.  
step to turn the sound ON.  
1) Make sure your radio is OFF.  
2) Release the battery latch at the bottom of the  
radio, and remove the cover.  
3) Install the NiMH battery pack into the battery  
compartment. Be certain to follow the  
instructions written on the label on the battery  
pack. 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.  
Note: If the rubber seal appears worn, nicked, or  
dried out, replacement seals are available from  
business hours.  
• 15 GMRS / 7 FRS Channels  
• 121 Sub Codes  
• Roger Beep  
• Battery Charger  
2) Press either the CH or  
key to the desired  
Choosing a Channel  
VOX sensitivity level. Use level 1 for increased  
sensitivity to voice in normally quiet environments  
and use a higher level to reduce undesired  
activation in very noisy environments.  
(CTCSS Tone and DCS Code) • Battery Level Meter  
Your radio has 22 channels and 121 Sub codes you  
can use to talk to others. In order to speak to  
someone, each of you must be set to the same  
channel and Sub code.  
,
Your radio complies with JIS4 water-proof  
standards, which means the radio is resistant  
to damage from light rain or water spray from  
all sides.  
• Up to 28 Mile Range*  
• Internal VOX Circuitry  
• 5 Selectable Call Tone Alerts  
• Backlit LCD Display  
• Channel Monitor  
• Channel Scan  
• Keypad Lock  
• DC IN 9V Jack  
Transmitting a Call Tone  
Your radio is equipped with 5 selectable call tones  
that are transmitted when the CALL key is pressed.  
To choose a channel:  
Note:  
The radio will only meet this rating if fully  
assembled and all rubber seals and the jack  
cover is well maintained and correctly fitted. This  
means that the Headset plug is not inserted, and  
the Headset jack cover and the battery pack are  
attached and securely fastened.  
icon appears on  
• Optional Headset Accessories  
• Headset Jack  
1) Press CH or  
select mode. The channel indicator flashes.  
2) Then press CH or key to increase or  
key to enter the channel  
For charging batteries directly without the cradle,  
use only the #DC-1002 Cigarette Lighter Adapter  
Note: If PTT or VOX is continuously used, 1 minute  
after you start using the feature the transmission  
stops and you hear a timeout error tone.  
To select a call tone:  
Other power cords could damage your radio.  
1) Enter the Menu. Advance through the Menu until  
the call icon appears on the display. The current  
call tone number (1-5) is indicated.  
2) Press the CH or  
decrease the number to the desired call tone.  
Each tone will be heard through the speaker.  
decrease the channel number displayed.  
To change the channel continuously, press and  
DC IN 9V Jack of the radio is for charge only.  
Be sure to install the battery before charge.  
Note: If your radio is exposed to salt water, clean  
your radio thoroughly with a small amount of fresh  
water (do not submerse it) , and dry it before  
turning it on.  
Monitor Mode Feature  
Your radio allows you to listen for weak signals on  
the current channel at the press of a key.  
hold CH or  
key for more than 1 second in  
key to increase or  
Use only the supplied battery and AC adapter or  
approved accessories from Uniden.  
channel select mode.  
3) To set a desired channel, press MENU/  
key.  
To turn ON the Monitor Mode:  
Charge time may vary depending on the battery  
life remaining.  
Note: Channels 1-7 have an typical range of up to  
28 miles. Channels 8-14 have an typical range of  
up to 5 miles. Channels 15-22 have an typical  
range of up to 28 miles. You can know which GMRS  
or FRS channel is active by the icon. hi icon is  
displayed while scanning GMRS channels, and the  
lo icon is displayed while scanning FRS channels.  
For brief listening, press MON button. The  
icon blinks.  
Press and hold MON button for 2 seconds until  
two beeps sound for continuous listening. The  
receiver circuit stays open, letting both the noise  
and weak signals be heard.  
To transmit the selected call tone, press the CALL  
key. The selected tone will automatically be  
transmitted for a fixed length of time. Call Tone will  
be cancelled when the PTT button is pressed.  
*Range may vary depending on environmental and/or topographical conditions.  
PACKAGE CONTENTS  
For fastest charging, turn off the radio before  
charging.  
USING A HEADSET  
Your package contains two radios, two rechargeable  
NiMH battery packs (#BP40), one AC adapter (#AD-  
0001), one charging cradle (#RC1284), two belt clips  
and this reference guide. A NiMH battery pack powers  
your unit. To order the following optional accessories,  
554-3988 during regular business hours.  
GMR2838-2CK RADIO  
Battery must be installed for operation, even from  
external power.  
You can use a headset (#ZA-133) for more private  
communications. To use a headset, lift the rubber  
cover from over the headset jack, then plug in the  
headset.  
Key Lock  
18  
12  
If battery power is low, you cannot operate the  
radio even using external power. Allow the  
batteries to charge before using. If you try to  
transmit while power is low, the radio will  
automatically turn off.  
13  
19  
To turn OFF Monitor Mode:  
To lock the keypad:  
Choosing a Sub Code  
20  
21  
Press MON button to return to "Normal" mode,  
14  
15  
1) Enter the Menu. Advance through the Menu until  
Each of the channels 1-22 may have any one of  
the codes, OFF or 1-121 selected. Code oF (OFF)  
indicates no Sub code selected and your radio can  
receive a signal regardless of the code settings of  
the transmitting radio.  
Important: Your radio is not waterproof when  
using a headset jack. When you remove the headset,  
be sure to fully press the jack cover into place to  
restore its waterproof capability.  
and the  
icon stops blinking and disappears.  
the  
icon appears on the display. The current  
Navigating through the Menu  
Use the MENU key to access your radio's  
advanced functions.  
22  
23  
Key Lock status oF (OFF) blinks on the display.  
2) To switch the Key Lock mode from oF (OFF) to  
on, press the CH key.  
3) To confirm the setting, press the MENU/ key.  
The radio returns to the "Normal" mode.  
Use only Uniden accessories.  
• NiMH Battery Pack - #BP40  
• Charging Cradle - #RC1284  
• Headset - #ZA-133  
• AC Adapter - #AD-0001  
• DC Adapter - #DC-1002  
Warrning!  
16  
17  
The charging cradle is not waterproof. If the  
BATTERY LEVEL AND LOW BATTERY  
ALERT  
Sub Code  
Setting  
SCAN  
Mode  
VOX  
Level  
Call  
charging cradle falls into water, unplug it before  
attempting to remove it from the water. Allow the  
cradle to dry completely before reconnecting the  
power.  
Key Lock  
ON-OFF  
1) Press MENU/  
key.  
Tone  
Note: If you exit the setting mode before confirming  
your selection by pressing the MENU/ key, the  
Key Lock setting will be set to oF (OFF).  
2) Press the CH or  
key to increase or  
decrease the code number displayed. You can  
6
This unit has a battery level meter on the display to  
indicate the status of the batteries. When the  
battery in the unit is low, the battery level meter  
flashes. Recharge the NiMH battery  
pack immediately.  
24  
Sub Code  
Change  
Start  
Scanning  
OFF, 1-5  
1-5  
also select oF (OFF) at this stage.  
7
8
Wipe off dirt or shake water from your radio  
before placing in the charging cradle if your radio  
is soiled or wet.  
3) Press MENU/  
key.  
To unlock the keypad:  
9
icon  
1) To enter the Menu, press the MENU/ key.  
2) Additional presses of the MENU/ key  
advance you through the Menu until exiting to  
"Normal" operating mode.  
3) Other methods of exiting the Menu function are:  
a. Press and hold the MENU/ key again.  
b. Press the PTT, MON, or CALL key  
c. Wait 10 seconds until the unit automatically  
returns to “Normal” mode.  
GMRS LICENSE  
1) Press and hold the MENU/ key to turn the  
radio OFF.  
2) Press and hold the MENU/ key again to turn  
the radio ON. The keypad is unlocked.  
Channel Scan Feature  
10  
5
Your radio has a channel scan feature that allows  
you to 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 continues scanning.  
Pressing the PTT button while the scan is paused  
on a channel allows you to transmit on that channel.  
The radio operates on the General Mobile Radio  
Service (GMRS) frequencies when using  
11  
Warning! To avoid the risk of personal injury or  
property damage from fire or electrical shock, only  
use the Uniden accessories specifically designated  
for this product.  
CHARGE  
Channels 1-7 and channels 15-22. You must  
have a GMRS license issued by the Federal  
Communications Commission to legally use  
these channels. For licensing information and  
application forms, visit the FCC online at: www.  
fcc.gov/wtb/uls or call the FCC hotline at  
1-800-418-3676. If you have any questions, you  
can contact the FCC direct at 1-888-225-5322.  
No license is required for operation on channels  
8-14 or operation on any channel in Canada.  
USING THE RADIO  
Note: While in keylock on mode, you can still use  
the radio to receive, transmissions, use call, VO  
or , PTT, MON and MENU/ to turn on or off  
the radio.  
1 Antenna  
14 Call Indicator  
16 Hi Power Indicator  
17 Low Power Indicator  
18 Transmit Indicator  
In order to get the most out of your new radio, read  
this reference guide completely before attempting to  
operate the unit.  
2 PTT (Push-To-Talk) Button 15 Scan Indicator  
CHARGING THE RADIO  
Your radio can be charged directly or by using the  
supplied charging cradle.  
Make sure to turn the radio OFF before placing  
the radio in the charging cradle.  
3 Monitor Button  
4 Channel Up/Down key  
5 Call Key  
To turn ON channel scan:  
Automatic Power Save Feature  
Voice Operated Transmission  
6 Headset Jack  
7 DC IN 9V  
19 Volume Setting Indicator  
20 Keypad Lock Indicator  
21 VOX Indicator  
Turning the Radio On and Adjusting the Volume  
Your radio has a unique circuit designed to  
dramatically extend the life of the batteries. If there  
is no transmission nor an incoming call within 3  
seconds, your radio switches to the Power Save  
mode. The radio is still able to receive  
Press MENU/ key twice. The scan... icon and  
Your radio is equipped with a user selectable Voice  
Operated Transmitter (VOX) that can be used for  
automatic voice transmissions. The VOX feature is  
designed to be used with a headset with a  
microphone. Transmission is initiated by speaking  
into the remote microphone instead of pushing the  
PTT button.  
1) Press and hold the MENU/ key to turn the  
radio ON, and increase the speaker volume by  
pressing the VO key. To decrease the volume,  
oF(OFF) blink. Press CH  
key to select on, and then  
press MENU/ key. The channel number changes as  
8 Menu/Power key  
9 Volume Up/Down key  
22 Channel Indicator  
23 Sub Code Indicator  
24 Charging Contacts  
Charge by Using the Radio  
the radio rapidly cycles through the channels.  
10 Microphone  
press the VO  
key.  
1) Connect the optional DC adapter (#DC-1002) to  
DC IN 9V jack of the radio and to a cigarette  
lighter port.  
11 Speaker  
To turn OFF channel scan:  
2) Press and hold the MENU/  
key again to turn  
transmissions in this mode.  
12 Battery Level Meter  
13 Receive Indicator  
Press the CALL, PTT, MENU/ key.  
the radio OFF.  
 

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