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Choosing a Channel
Your radio has 22 channels you can use to talk to
others. In order to speak to someone, each of you
must be set to the same channel.
To choose a channel:
With the radio in "Normal" operating mode press
the ch/scan ▲ or ▼ key to increase or decrease
the channel number displayed.
Note: FRS Channels 8-14 have an expectancy
range of up to 3 miles. GMRS channels 1-7, 15-22
have an expectancy range of up to 8 miles by
pressing the Power boost button.
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 will appear 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 are finished speaking, release the PTT
button.You can now receive incoming calls. While
receiving, the icon will appear on the display.
Note: When you press the Power boost button,
boost and icon appear on the display.The
radio will transmit Maximum power when a GMRS
channel is selected. After one minute past when
the boost transmission is established, the
transmission stops automatically, and you will hear
a boost time out error tone.
GMR855-2/GMR855-2CK
* Range may vary depending on environmental and/or topographical conditions.
• Power Boost Button for
Maximum Range
• 15 GMRS / 7 FRS Channels
• Up to 8 Mile Range*
• 5 Selectable Call Tone Alerts
• Backlit LCD Display
• Battery Recharge Circuit
• Roger Beep
• Key Beep on/off
1 Antenna
2 PTT (Push-To-Talk) Button
3 Power boost Button
4 Monitor Key
5 Channel/Scan Up Key
6 Channel/Scan Down Key
7 Speaker
8 Call Key
9 Volume Up Key
10 On/off/select Key
11 Volume Down Key
12 Microphone
13 Battery Level Meter
14 Receive Indicator
15 Scan Indicator
16 Channel Indicator
17 Power Boost Indicator
18 Volume Setting Indicator
19 GMRS/FRS Indicator
20 Transmit Indicator
21 Call Indicator
22 Keypad Lock Indicator
23 Charging LED’s
Congratulations on your purchase of the Uniden
GMR855-2/GMR855-2CK (General Mobile Radio
Service) radios. These products are lightweight,
palm-sized radios. Use them at sporting events to
stay in contact with family and friends, hiking,
skiing, outdoors, or in a neighborhood watch for
vital communication. These compact, state-of-the-
art devices are equipped with many features.
PACKAGE CONTENTS
Your package contains 2 radios, 2 reference guides
including the product registration card, and 2 Belt
Clips. The GMRS855-2CK also contents NiMH
Battery Packs, Dual Drop-in Recharging Cradle and
AC adapter.The following optional accessories may
be purchased from your participating Uniden dealer
or call1-800-554-3988 or visit us on the web at
www.uniden.com. Use only Uniden accessories.
• NiMH Battery Pack - #BP38
• Recharging Cradle - #RC6348
• AC Adapter - #AC6248
FCC GMRS LICENSE
The GMR855-2/GMR855-2CK radio operates on
the General Mobile Radio Service (GMRS)
frequencies which require a Federal
Communication Commission license to operate.
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.
INSTALL THE BATTERIES
Your GMR855-2/GMR855-2CK radio uses 4 AAA
alkaline batteries or NiMH battery pack (included in
GMR855-2CK only). If alkaline batteries are used,
we recommend using high quality alkaline batteries.
To install the 4 AAA alkaline batteries or Ni-MH
battery:
1) Make sure your radio is OFF.
2) Remove the battery compartment door by
pressing up the tab at the bottom of the
compartment door allowing the door to be
removed.
3) Install 4 AAA alkaline batteries (not included)
into the battery compartment. Be certain to
follow the + and – symbols in the compartment.
If you use Ni-MH battery, install the battey
making the label faced up. Installing the batteries
incorrectly will prevent the unit from operating.
4) Replace the battery compartment door.
USING THE RADIO
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 sel/ key to turn the unit
ON, and increase the speaker volume by
pressing the volume ▲ key. To decrease the
volume, press the volume ▼ key.
2) Press and hold the sel/ key again to turn the
unit OFF.
Adjusting the Sound (Key Beeps)
Your radio emits a beep each time one of the
buttons or keys (except for the PTT and Power
boost button, and call key) are pressed. To turn this
sound OFF, press and hold call key while turning ON
the radio. Repeat this step to turn the sound ON.
• Battery Level Meter
• Channel Monitor
• Channel Scan
• Keypad Lock
• Belt Clip
• NiMH Battery Pack and
Charger
(GMR855-2CK only)
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
batteries in the unit are very low, the battery level
meter icon will flash. Replace the alkaline
batteries immediately or if you are using the NiMH
battery pack, you must recharge the battery 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.
1) To enter the Menu, press the sel/ key.
2) Additional presses of the sel/ key will
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 sel/ key again.
b. Press the PTT or Power boost button, or mon,
volume ▲/▼, and call key.
c. Wait 10 seconds until the unit automatically
returns to “Normal” mode.
Transmitting a Call Tone
Your GMR855-2/GMR855-2CK radio is equipped
with 5 selectable call tones that will be 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 ( - ) will be
indicated.
2) Press the ch/scan ▲ or ▼ key to increase or
decrease the number to the desired call tone.
Each tone will be heard through the speaker.
3) Exit the Menu.
To transmit the selected call tone, press the call
key. The selected tone will automatically be
transmitted for a fixed length of time.
Keypad 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 (OFF) blinks on the display.
2) To switch the key Lock mode from OFF to ON,
press the ch/scan ▲ key.
3) To confirm the setting, press the sel/ key. The
radio returns to the "Normal" mode.
Note: If you exit the setting mode before confirming
your selection by pressing the sel/ key, the key
Lock setting will be set to OFF.
To Unlock the keypad:
1) Press and hold the
sel/ key to turn the unit
OFF.
2) Press and hold the sel/ key again to turn the
unit ON. The keypad is unlocked.
Channel Scan Feature
Your GMR855-2/GMR855-2CK radio has a channel
Scan feature that allows you to easily Scan all 22
channels. When an active channel is detected, the
unit will pause on that channel until the channel is
clear. Then after a 2 second delay, the unit will
continue scanning. Pressing the PTT or Power
boost button while the Scan is paused on a
channel will allow you to transmit on that channel.
To turn ON channel scanning:
Press and hold either the
ch/scan ▲ or ▼ key
until the scan icon is displayed. The channel
number on the display will change as the radio
rapidly cycles through the channels.
Normal NormalCall Tone Key Lock
1-5
ON-OFF
GMR855-2/GMR855-2CK RADIO
Automatic Power Save Feature
Your GMR855-2/GMR855-2CK 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 will automatically turn ON when
any key (except for the PTT and Power boost
button) is pressed. The LCD display will
illuminate for 10 seconds before turning OFF.
Monitor Mode Feature
Your GMR855-2/GMR855-2CK radio allows you to
listen for weak signals on the current channel at the
press of a key.
To turn ON the monitor mode:
• Press mon for brief listening, the icon will
blink.
• Press and hold mon for 2 seconds for
continuous listening. The receiver circuit will stay
open, and letting in both the noise & weak
signals.
To turn OFF monitor mode:
• Press
mon to return to "Normal" mode, and the
icon stops blinking.
Roger Beep
Roger Beep is a BEEP that is sent to notify the end
of transmission (PTT transmission.) Roger Beep
can be heard through the speaker when Key Beep
is on. If key beep is turned off, Roger Beep will not
be heard from the speaker.
To turn ON Roger Beep:
Press and hold the
ch/scan ▲ key while turning
ON the radio.
To turn OFF Roger Beep:
Press and hold the
ch/scan ▲ key while turning
ON the radio.
Navigating through the Menu
To access the advanced features of the GMR855-2
/GMR855-2CK, your radio has a Menu function.
USING THE CHARGING CRADLE
If you use the rechargeable NiMH battery pack, two
GRM855-2CK radios can be charged by using the
charging cradle.
Make sure to turn the radio OFF before placing
the radio in the charging cradle. Otherwise the
battery level meter icon won’t indicate properly.
1) Connect the AC adapter (# AC6248) 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 charge.
Note: The charge indicator LED's will remain on as
long as the radios are left in the charger.
To turn OFF channel scanning:
Press the
sel/ key, call key, Power boost button
or PTT button.
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