Congratulations on your purchase of the Uniden
GMR1048-2CK (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.
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.
•
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.
Channel Scan Feature
1) To enter the Menu, press the menu key.
2) Additional presses of the menu key advances
you through the Menu until exiting to "Normal"
operating mode.
Key Lock
GMR1048-2CK
Your GMR1048-2CK 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.
To lock the keypad:
• 15 GMRS / 7 FRS Channels
• 99 Sub Codes
(CTCSS Tone and DCS Code) • Channel Monitor
• Battery Charger
1) Enter the Menu. Advance through the Menu until
the
Key Lock status oF (OFF) blinks on the display.
2) To switch the Key Lock mode from oF (OFF) to on,
press the L key.
icon appears on the display. The current
• Battery Level Meter
3) Other methods of exiting the Menu function are:
key again.
4) Replace the battery compartment door.
a. Press and hold the
b. Press the PTT, mon, call, wx/alert, or chan
tone/scan key
• Up to 10 Mile Range*
• Scramble
• Channel Scan
• Keypad Lock
USING THE RADIO
3) To confirm the setting, press the menu key.
The radio returns to the "Normal" mode.
BATTERY LEVEL AND
LOW BATTERY ALERT
c. Wait 10 seconds until the unit automatically
returns to “Normal” mode.
• Internal VOX Circuitry
• 5 Selectable Call Tone Alerts
• Backlit LCD Display
• NOAA Emergency /
Weather Channels
• Emergency Weather Alert
In order to get the most out of your new radio, read
this reference guide completely before attempting to
operate the unit.
To turn ON channel scan:
PACKAGE CONTENTS
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).
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
Press and hold the chan tone/scan key until the
scan... icon is displayed. The channel number on
the display changes as the radio rapidly cycles
through the channels.
Setting Scramble
• Optional Headset Accessories • DC IN 9V Jack
• Headset Jack
• Roger Beep
Your package contains two GMR1048-2CK radios,
two rechargeable NiMH battery packs (#BP40), two
AC adapters (#AD-1004), two charging cradles
(#RC1041), two belt clips and this reference guide.
You can operate the unit using the rechargeable
NiMH battery pack or 4 AAA alkaline batteries
(not included). The following optional accessories
can be purchased by calling the Customer Hotline at
1-800-297-1023 (Mon-Fri 7 am to 7 pm,
Scramble feature allows you to make a private
conversation. No one listening to your conversation
can understand what you are talking about. Be sure
that your party also sets their radio to the scramble
feature.
Turning the Radio On and Adjusting the Volume
1) Press and hold the
key to turn the radio ON,
icon
flashes. Recharge the NiMH battery
To unlock the keypad:
and increase the speaker volume by pressing the
L key. To decrease the volume, press the M
key.
pack immediately or if you are using the alkaline
batteries, you must replace the alkaline batteries in
order to continue using the radio.
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.
To turn OFF channel scan:
Press the call, PTT, wx/alert or menu key, or
press and hold the chan tone/scan key for 2
seconds.
2) Press and hold the
radio OFF.
key again to turn the
To set Scramble:
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.
1) Enter the Menu.
2) Select on using L or M.
Automatic Power Save Feature
Your GMR1048-2CK 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.
Adjusting the Sound (Key Beeps)
Sat/Sun/holidays--except Thanksgiving and
Christmas--9 am to 5 pm, CST). Use only Uniden
accessories.
Talking on Your Radio
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.
Voice Operated Transmission
To talk to others using the radio:
Your GMR1048-2CK 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 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
display.
• NiMH Battery Pack - #BP40
• Charging Cradle - #RC1041
• Headset - #HS910/HS915
• AC Adapter - #AD-1004
*Range may vary depending on environmental and/or topographical conditions.
CHARGING THE RADIO
GMR1048-2CK RADIO
If you use the rechargeable NiMH battery pack, two
GMR1048-2CK radios can be charged directly or by
using the supplied charging cradle.
LCD Backlight
Choosing a Channel
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.
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.
To select the VOX level:
Charge by Using the Radio
GMRS LICENSE
1) Connect the AC adapter to DC IN 9V jack of the
radio and to a standard 120V wall outlet.
2) Charge the battery pack for 16 hours until the
battery indicator stop flashing.
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
Roger Beep
The GMR1048-2CK radio operates on the
General Mobile Radio Service (GMRS)
icon appears on the
To choose a channel:
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.
With the radio in "Normal" operating mode press
the chan tone/scan key and press the L or M key
to increase or decrease the channel number
displayed.
frequencies when using 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,
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.
Monitor Mode Feature
sensitivity of the VOX circuit.
Your GMR1048-2CK radio allows you to listen for
weak signals on the current channel at the press of
a key.
Using the Charging Cradle
2) Press either the L or M 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.
1) Connect the AC adapter 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) Charge the battery pack for 16 hours until the
battery indicator stops flashing. Then remove the
radio from the charging cradle after completing
charging.
Note: Channels 1-7 have an typical range of up to
10 miles. Channels 8-14 have an typical range of
up to 5 miles. Channels 15-22 have an typical
range of up to 10 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 turn ON the Monitor Mode:
• For brief listening, press mon button. The
icon blinks.
• Press and hold mon button for 2 seconds untill
two beeps sound for continuous listening. The
receiver circuit stays open, letting both the noise
and weak signals to be heard.
To turn ON Roger Beep:
Transmitting a Call Tone
Press and hold the L key while turning ON the radio.
Your GMR1048-2CK radio is equipped with 5
selectable call tones that are transmitted when the
call key is pressed.
To turn OFF Roger Beep:
Press and hold the L key while turning ON the radio.
Choosing a Sub Code
To select a call tone:
Note:
To turn OFF Monitor Mode:
1 Antenna
16 Call Indicator
17 Scan Indicator
18 Channel Indicator
19 Hi Power Indicator
20 Low Power Indicator
21 Alert Indicator
22 Transmit Indicator
23 Volume Setting Indicator
24 Keypad Lock Indicator
25 VOX Indicator
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.
•
•
•
•
•
•
DC IN 9V Jack of the radio is for charge only.
Be sure to install the battery before charge.
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 L or M key to increase or decrease
the number to the desired call tone. Each tone
will be heard through the speaker.
Press mon button to return to "Normal" mode,
and the
2 PTT (Push-To-Talk) Button
3 Monitor Button
4 Weather/Alert Key
5 Menu Key
6 Channel Tone/Scan Key
7 Speaker
INSTALL THE BATTERY
icon stops blinking and disappears.
Use only the supplied battery and AC adapter or
approved accessories from Uniden.
Your GMR1048-2CK radio uses a supplied NiMH
battery pack or 4 AAA alkaline batteries (not
included).
Navigating through the Menu
Charge time may vary depending on the battery
life remaining.
To access the advanced features of the GMR1048-
2CK, your radio has a Menu function.
1) Press chan tone/scan in channel select mode.
The subcode indicator will flash.
2) Press the L or M key to increase or decrease
the code number displayed. You can also select
oF (OFF) at this stage.
8 Up/Down Button
9 Headset Jack
10 On/Off Key
11 Call Key
12 Microphone
To install the NiMH battery pack:
Do not recharge alkaline batteries. Doing so can
create a safety hazard or damage the radio.
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.
Normal
Scramble
VOX Level
Call Tone
Key Lock
Normal
1) Make sure your radio is OFF.
26 Weather Indicator
27 Sub Code Indicator
28 Scramble Indicator
29 Charging Contacts
2) Remove the battery compartment door by
pressing the tab at the bottom of the
For fastest charging, turn off the radio before
charging.
1-5
ON-OFF
OFF, 1-5
ON-OFF
3) Exit the Menu.
13 DC IN 9V
14 Battery Level Meter
15 Receive Indicator
compartment door, and remove the cover.
3) Install the NiMH battery pack into the battery
Battery must be installed for operation, even from
external power.
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