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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: Channels 1-7 have an expectancy range of
up to 6 miles. Channels 8-14 have an expectancy
range of up to 2 miles. Channels 15-22 have an
expectancy range of up to 6 miles.
GMR635-2
* Range may vary depending on environmental and/or topographical conditions.
• 15 GMRS / 7 FRS Channels
• Up to 6 Mile Range*
• 5 Selectable Call Tone Alerts
• Backlit LCD Display
• Battery Recharge Circuit
• Battery Level Meter
• Channel Monitor
• Channel Scan
• Keypad Lock
• Roger Beep
• Key Beep
1 Antenna
2 PTT (Push-To-Talk) Button
3 Monitor Key
4 Channel/Scan Up Key
5 Channel/Scan Down Key
6 Speaker
7 Call/Select Key
8 Volume Up Key
9Power Key
10 Volume Down Key
11 Microphone
12 Battery Level Meter
13 Receive Indicator
14 Scan Indicator
15 Channel Indicator
16 Volume Setting Indicator
17 GMRS/FRS Indicator
18 Transmit Indicator
19 Call Indicator
20 Keypad Lock Indicator
Congratulations on your purchase of the Uniden
GMR635-2 (General Mobile Radio Service) radio.
This product is a lightweight, palm-sized radio. Use
it at sporting events to stay in contact with family
and friends, hiking, skiing, outdoors, or in a
neighborhood watch for vital communication.
This compact, state-of-the-art device is equipped
with many features.
OPTIONAL ACCESSORIES
Your package contains two GMR635 radios, two
belt clips and this reference guide.You may operate
the unit using rechargeable NiMH (not included) or
4 AAA alkaline batteries (not included). 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
INSTALL THE BATTERIES
Your GMR635-2 radio uses a NiMH battery pack
(not included) or 4 AAA alkaline batteries (not
included). If alkaline batteries are used, we
recommend using high quality alkaline batteries.
To install the NiMH battery pack :
1) Make sure your radio is OFF.
2) Remove the battery compartment door by
pushing up the tab at the bottom of the
compartment door allowing the door to be
removed.
3) Place the NiMH battery pack in the
compartment, making sure that the charge
contacts are on the lower half of the battery
pack (not included) and facing out. If the NiMH
battery pack is installed incorrectly, the radio will
not operate.
4) Replace the battery compartment door.
5) The battery pack (not included) must be charged
before using for the first time. Place the
GMR635 radio into the charging cradle (not
included) allowing 16 hours charging time to
fully charge the battery pack.
Note: Always make sure your battery pack is fully
discharged before recharging to prolong the life of
the battery pack. The LED will illuminate while the
radio is in the charging cradle.
To install 4 AAA alkaline batteries (not included):
1) Make sure your radio is OFF.
2) Remove the battery compartment door by
pushing up the tab at the bottom of the
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 key to turn the unit ON,
and increase the speaker volume by pressing
the vol ▲ key. To decrease the volume, press
the vol ▼ key.
2) Press and hold the 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 button and
call/sel key) are pressed. To turn this sound OFF,
press and hold call/sel while turning ON the radio.
Repeat this step to turn the sound ON.
Navigating through the Menu
To access the advanced features of the GMR635-2,
your radio has a Menu function.
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 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 and hold the call/sel
key.
2) Additional presses of the call/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 PTT, mon, or vol ▲/▼.
b. Wait 10 seconds until the unit automatically
returns to “Normal” mode.
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.
Transmitting a Call Tone
Your GMR635-2 radio is equipped with 5 selectable
call tones that will be transmitted when the call/sel
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/sel key. The selected tone will automatically be
transmitted for a fixed length of time.
Channel Scan Feature
Your GMR635-2 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 PTT 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.
To turn OFF channel scanning:
Press
call/sel, or PTT.
Normal NormalCall Tone Key Lock
1-5
ON-OFF
GMR635 RADIO
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 call/sel key.
The radio returns to the "Normal" mode.
Note: If you exit the setting mode before confirming
your selection by pressing the call/sel key, the key
Lock setting will be set to OFF.
To Unlock the keypad:
1) Press and hold the key to turn the unit
OFF.
2) Press and hold the key again to turn the unit
ON. The keypad is unlocked.
Automatic Power Save Feature
Your GMR635-2 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 PTT button) is pressed. The LCD
display will illuminate for 10 seconds before turning
OFF.
Monitor Mode Feature
Your GMR635-2 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.
Roger Beep can be heard through the speaker
when Key Beep is on.
Roger Beep is transmitted even if key beep is
turned off. However Roger Beep will not be heard
from the speaker.
To turn OFF Roger Beep: Press and hold the
ch/scan ▲ key while turning ON the radio.
To turn ON Roger Beep: Press and hold the
ch/scan ▲ key while turning the radio ON again.
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.
Installing the batteries incorrectly will prevent the
radio from operating.
4) Replace the battery compartment door.
USING THE CHARGING CRADLE
If you use the rechargeable NiMH battery pack, two
GMR635 radios can be charged by using the
charging cradle (not included).
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) (not
included) 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.