Uniden GMR1048-2CK - Manual

GMR1048-2CK

*Range may vary depending on environmental and/or topographical conditions.

• 15 GMRS / 7 FRS Channels
• 99 Sub Codes

(CTCSS Tone and DCS Code)

• Up to 10 Mile Range*
• Scramble
• Internal VOX Circuitry
• 5 Selectable Call Tone Alerts
• Backlit LCD Display
• Optional Headset Accessories
• Headset Jack
• Roger Beep

1 Antenna
2 PTT (Push-To-Talk) Button
3 Monitor Button
4 Weather/Alert Key
5 Menu Key
6 Channel Tone/Scan Key
7 Speaker
8 Up/Down Button
9 Headset Jack

10 On/Off Key
11 Call Key
12 Microphone
13 DC IN 9V
14 Battery Level Meter
15 Receive Indicator

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
26 Weather Indicator
27 Sub Code Indicator
28 Scramble Indicator
29 Charging Contacts

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.

PACKAGE CONTENTS

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,
Sat/Sun/holidays--except Thanksgiving and
Christmas--9 am to 5 pm, CST).

Use only Uniden

accessories.

• NiMH Battery Pack - #BP40
• Charging Cradle - #RC1041
• Headset - #HS910/HS915
• AC Adapter - #AD-1004

GMRS LICENSE

The GMR1048-2CK radio operates on the
General Mobile Radio Service (GMRS)
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,
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.

INSTALL THE BATTERY

Your GMR1048-2CK radio uses a supplied NiMH
battery pack or 4 AAA alkaline batteries (not
included).

To install the NiMH battery pack:

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

USING THE RADIO

• Battery Charger
• Battery Level Meter
• Channel Monitor
• Channel Scan
• Keypad Lock
• NOAA Emergency /

Weather Channels

• Emergency Weather Alert
• DC IN 9V Jack

BATTERY LEVEL AND

LOW BATTERY ALERT

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
icon

flashes. Recharge the NiMH battery

pack immediately or if you are using the alkaline
batteries, you must replace the alkaline batteries in
order to continue using the radio.

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.

Normal

Normal

Scramble

VOX Level

Call Tone

Key Lock

1-5

ON-OFF

OFF, 1-5

ON-OFF

GMR1048-2CK RADIO

CHARGING THE RADIO

If you use the rechargeable NiMH battery pack, two
GMR1048-2CK radios can be charged directly or by
using the supplied charging cradle.

Charge by Using the Radio

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.

Using the Charging Cradle

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:

• DC IN 9V Jack of the radio is for charge only.

Be sure to install the battery before charge.

• Use only the supplied battery and AC adapter or

approved accessories from Uniden.

• Charge time may vary depending on the battery

life remaining.

• Do not recharge alkaline batteries. Doing so can

create a safety hazard or damage the radio.

• For fastest charging, turn off the radio before

charging.

• Battery must be installed for operation, even from

external power.

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) Replace the battery compartment door.

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

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

key again to turn the

radio OFF.

Adjusting the Sound (Key Beeps)

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.

Choosing a Channel

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 choose a channel:

With the radio in "Normal" operating mode press
the

chan tone/scan

key and press the

▲

or

▼

key

to increase or decrease the channel number
displayed.

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.

Choosing a Sub Code

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) Press

chan tone/scan

in channel select mode.

The subcode indicator will flash.

2) Press the

▲

or

▼

key to increase or decrease

the code number displayed. You can also select

oF

(OFF) at this stage.

3) Exit the Menu.

Channel Scan Feature

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 turn ON channel scan:

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.

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.

Talking on Your Radio

To talk to others using 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

icon appears on the

display.

Monitor Mode Feature

Your GMR1048-2CK radio allows you to 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

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 OFF Monitor Mode:

Press

mon

button to return to "Normal" mode,

and the

icon stops blinking and disappears.

Navigating through the Menu

To access the advanced features of the GMR1048-
2CK, your radio has a Menu function.

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.

3) Other methods of exiting the Menu function are:

a. Press and hold the

key again.

b. Press the

PTT

,

mon

,

call

,

wx/alert

, or

chan

tone/scan

key

c. Wait 10 seconds until the unit automatically

returns to “Normal” mode.

Setting Scramble

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.

To set Scramble:

1) Enter the Menu.
2) Select on using

▲

or

▼

.

Voice Operated Transmission

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.

To select the VOX level:

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.

Transmitting a Call Tone

Your GMR1048-2CK radio is equipped with 5
selectable call tones that are transmitted when the

call

key is pressed.

To select a call tone:

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.

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.

Key Lock

To lock the keypad:

1) Enter the Menu. Advance through the Menu until

the

icon appears on the display. The current

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.

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)

.

To unlock the keypad:

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.

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.

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.

Roger Beep

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.

To turn ON Roger Beep:

Press and hold the

▲

key while turning ON the radio.

To turn OFF Roger Beep:

Press and hold the

▲

key while turning ON the radio.

• 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.