Uniden Two Way Radio 2238 2CK User Manual

Congratulations on your purchase of the Uniden  
GMR2238-2CK (General Mobile Radio Service)  
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.  
prevent the unit from operating.  
4) Replace the battery compartment door.  
Battery must be installed for operation, even from  
external power.  
Channel Scan Feature  
2) Additional presses of the MENU key advances  
you through the Menu until exiting to "Normal"  
operating mode.  
3) Other methods of exiting the Menu function are:  
a. Press and hold the key again.  
b. Press the PTT, MON, CALL, SCAN or CHAN  
TONE key  
To unlock the keypad:  
GMR2238-2CK  
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.  
1) Press and hold the key to turn the radio OFF.  
2) Press and hold the key again to turn the radio  
ON. The keypad is unlocked.  
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.  
BATTERY LEVEL AND LOW  
BATTERY ALERT  
Automatic Power Save Feature  
• 15 GMRS / 7 FRS Channels  
• 99 Sub Codes  
• Roger Beep  
• Battery Charger  
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 transmissions in this  
mode.  
c. Wait 10 seconds until the unit automatically  
returns to “Normal” mode.  
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  
(CTCSS Tone and DCS Code) • Battery Level Meter  
• Up to 22 Mile Range*  
• Internal VOX Circuitry  
• 5 Selectable Call Tone Alerts  
• Backlit LCD Display  
• Channel Monitor  
• Channel Scan  
• Keypad Lock  
USING THE RADIO  
To turn ON channel scan:  
Voice Operated Transmission  
PACKAGE CONTENTS  
Press the SCAN key until the scan... icon is  
displayed. The channel number on the display  
changes as the radio rapidly cycles through the  
channels.  
icon  
flashes. Recharge the NiMH battery  
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.  
In order to get the most out of your new radio, read  
this reference guide completely before attempting to  
operate the unit.  
Your package contains two radios, two rechargeable  
NiMH battery packs (#BP40), one AC adapter (#PS-  
0007), one charging cradle (#RC1285), two belt clips  
and this reference guide. You can operate the unit  
using the rechargeable NiMH battery pack or 4 AAA  
pack immediately or if you are using the alkaline  
batteries, you must replace the alkaline batteries in  
order to continue using the radio.  
• DC IN 9V Jack  
• Optional Headset Accessories  
• Headset Jack  
LCD Backlight  
The LCD Backlight automatically turns ON when any  
key (except the PTT button) is pressed. The LCD  
display illuminates for 10 seconds before turning  
OFF.  
Turning the Radio On and Adjusting the Volume  
To turn OFF channel scan:  
1) Press and hold the key to turn the radio ON,  
and increase the speaker volume by pressing the  
key. To decrease the volume, press the ▼  
key.  
2) Press and hold the  
OFF.  
Warning! To avoid the risk of personal injury or  
Press the CALL, PTT, MENU or SCAN key.  
alkaline batteries (not included). To order the following property damage from fire or electrical shock, only  
optional accessories, visit our web site at www.  
uniden.com or call 1-800-554-3988 during regular  
business hours. Use only Uniden accessories.  
• NiMH Battery Pack - #BP40  
• Charging Cradle - #RC1285  
• Headset - #HS910/HS915/ZA-133  
• AC Adapter - #PS-0007  
use the Uniden accessories specifically designated  
for this product.  
To select the VOX level:  
Talking on Your Radio  
Roger Beep  
key again to turn the radio  
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.  
2) Press either the or key to the desired 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.  
To talk to others using the radio:  
Roger Beep is a BEEP that is sent to notify the end of  
transmission (both PTT and VOX transmission).  
Roger Beep can be heard through the speaker when  
both Roger beep and Key Beep are set to ON. When  
Roger beep is set to ON and Key Beep OFF, Roger  
Beep will not be heard from the speaker but it will be  
transmitted to your party. When Roger Beep is set to  
OFF, Roger Beep neither be herad nor transmitted.  
CHARGING THE RADIO  
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.  
Adjusting the Sound (Key Beeps)  
If you use the rechargeable NiMH battery pack, two  
radios can be charged directly or by using the  
supplied charging cradle.  
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  
CALL key while turning ON the radio. Repeat this  
step to turn the sound ON.  
*Range may vary depending on environmental and/or topographical conditions.  
• DC Adapter - #DC-1002  
,
Charge by Using the Radio  
GMR2238-2CK RADIO  
1) Connect the optional DC adapter (#DC-1002) to  
DC IN 9V jack of the radio and to a cigarette  
lighter port.  
2) Charge the battery pack for 16 hours until the  
battery indicator stops flashing.  
To turn ON Roger Beep:  
Choosing a Channel  
GMRS LICENSE  
Transmitting a Call Tone  
Your radio is equipped with 5 selectable call tones  
that are transmitted when the CALL key is pressed.  
Your radio has 22 channels and 99 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.  
Press and hold the key while turning ON the radio.  
icon appears on  
The radio operates on the General Mobile Radio  
Service (GMRS) frequencies when using  
To turn OFF Roger Beep:  
Press and hold the key while turning ON the radio.  
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 Charging Cradle  
To select a call tone:  
Monitor Mode Feature  
Your radio allows you to listen for weak signals on  
the current channel at the press of a key.  
1) Connect the AC adapter (#PS-0007) to DC IN 9V  
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.  
To choose a channel:  
1) Enter the Menu. Advance through the Menu until  
the call icon is shown on the display. The  
current call tone number (1-5) is indicated.  
2) Press the or key to increase or decrease  
the number to the desired call tone. Each tone  
will be heard through the speaker.  
With the radio in "Normal" operating mode press the  
CHAN TONE key and press the or key to  
increase or decrease the channel number displayed.  
To turn ON the Monitor Mode:  
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 to be heard.  
Note: Channels 1-7 have an typical range of up to  
22 miles. Channels 8-14 have an typical range of  
up to 5 miles. Channels 15-22 have an typical  
range of up to 22 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.  
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.  
Note:  
MIC  
For charging batteries directly without the cradle,  
use only the #DC-1002 Cigarette Lighter Adapter  
To turn OFF Monitor Mode:  
CHARGE  
INSTALL THE BATTERY  
Press MON button to return to "Normal" mode,  
Key Lock  
Other power cords could damage your radio.  
Choosing a Sub Code  
and the  
icon stops blinking and disappears.  
Your radio uses a supplied NiMH battery pack or  
4 AAA alkaline batteries (not included).  
To lock the keypad:  
DC IN 9V Jack of the radio is for charge only.  
Be sure to install the battery before charge.  
Each of the channels 1-22 may have any one of  
the codes, OFF or 1-99 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.  
1 Antenna  
14 Battery Level Meter  
2 PTT (Push-To-Talk) Button 15 Receive Indicator  
Navigating through the Menu  
Use the MENU button to access your radio's  
advanced functions.  
1) Enter the Menu. Advance through the Menu until  
3 Monitor Button  
4 Scan Key  
5 Menu Key  
16 Call Indicator  
17 Scan Indicator  
the  
icon appears on the display. The current  
Use only the supplied battery and AC adapter or  
approved accessories from Uniden.  
To install the NiMH battery pack:  
Key Lock status oF (OFF) blinks on the display.  
2) To switch the Key Lock mode from oF (OFF) to  
on, press the key.  
3) To confirm the setting, press the MENU key.  
The radio returns to the "Normal" mode.  
1) Make sure your radio is OFF.  
2) Remove the battery compartment door by  
pressing the tab at the bottom of the  
compartment door, 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  
18 Channel Indicator  
19 Hi Power Indicator  
20 Low Power Indicator  
21 Transmit Indicator  
22 Volume Setting Indicator  
23 Keypad Lock Indicator  
24 VOX Indicator  
Charge time may vary depending on the battery  
life remaining.  
Normal  
VOX Level  
OFF, 1-5  
Call Tone  
1-5  
Key Lock  
ON-OFF  
Normal  
6 Channel Tone Key  
7 Speaker  
1) Press CHAN TONE in channel select mode.  
The subcode indicator will flash.  
8 Up/Down Button  
9 Headset Jack  
10 On/Off Key  
11 Call Key  
12 Microphone  
13 DC IN 9V  
Do not recharge alkaline batteries. Doing so can  
create a safety hazard or damage the radio.  
2) Press the or key to increase or decrease  
the code number displayed. You can also select  
oF (OFF) at this stage.  
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).  
For fastest charging, turn off the radio before  
charging.  
25 Sub Code Indicator  
26 Charging Contacts  
3) Exit the Menu.  
1) To enter the Menu, press the MENU key.  
 

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