background image

GMR1838-2CK

*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 18 Mile Range*
• Internal VOX Circuitry
• 5 Selectable Call Tone Alerts
• Backlit LCD Display
• Optional Headset Accessories
• Headset Jack

1 Antenna
2 PTT (Push-To-Talk) Button
3 Monitor Button
4 Scan Key
5 Menu Key
6 Channel Tone 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 Transmit Indicator
22 Volume Setting Indicator
23 Keypad Lock Indicator
24 VOX Indicator
25 Sub Code Indicator
26 Charging Contacts

Congratulations on your purchase of the Uniden
GMR1838-2CK (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 GMR1838-2CK radios,
two rechargeable NiMH battery packs (#BP40), one
AC adapter (#AD-0001), one charging cradle
(#RC1032), 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). To order the following 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 - #RC1032
•  Headset - #HS910/HS915/ZA-133
•  AC Adapter - #AD-0001
•  DC Adapter - #DC-1002

GMRS LICENSE

The GMR1838-2CK radio operates on the
General Mobile Radio Service (GMRS) frequen-
cies 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 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

compartment. Be certain to follow the 
instructions written on the label on the battery
pack. Installing the battery pack incorrectly will

USING THE RADIO

• Roger Beep
• Battery Charger
• Battery Level Meter
• Channel Monitor
• Channel Scan
• Keypad Lock
• 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.

GMR1838-2CK RADIO

CHARGING THE RADIO

If you use the rechargeable NiMH battery pack, two
GMR1838-2CK radios can be charged directly or by
using the supplied charging cradle.

Charge by Using the 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.

Using the Charging Cradle

1) Connect the AC adapter (#AD-0001) 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.

Note:

• For charging batteries directly without the cradle,

use only the #DC-1002 Cigarette Lighter Adapter
cord, available from www.Uniden.com.
Other power cords could damage your radio.

• 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.

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

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

18 miles. Channels 8-14 have an typical range of up
to 5 miles. Channels 15-22 have an typical range of
up to 18 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

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 GMR1838-2CK radio has a channel scan fea-
ture 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 the 

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

menu

or 

scan

key.

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 GMR1838-2CK 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 until

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 GMR1838-
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

scan

or 

chan tone

key

c. Wait 10 seconds until the unit automatically

returns to “Normal” mode.

Voice Operated Transmission

Your GMR1838-2CK 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 GMR1838-2CK 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 GMR1838-2CK 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.

Normal

Normal

VOX Level

Call Tone

Key Lock

1-5

OFF, 1-5

ON-OFF

• Battery must be installed for operation, even from

external power.

• 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.

UT037ZH_GMR1838-2CK_E 1106  11/6/07  1:18 PM  Page 1

Reviews: