Uniden GMR638-2 Reference Manual

GMR638-2 Congratulations on your purchase of the Uniden
GMR638 Series (General Mobile Radio Service)
GMR638-2CK
radio. This product is a lightweight, palm-sized
radio. Use it at sporting events to stay in contact
GMR638-3CK
with family and friends, hiking, skiing, outdoors, or
in a neighborhood watch for vital communication.
• 15 GMRS / 7 FRS Channels • Battery Charger This compact, state-of-the-art device is equipped
• 38 CTCSS Codes • Battery Level Meter
with many features.
• Up to 6 Mile Range* • Channel Monitor
• Internal VOX Circuitry • Channel Scan
• 5 Selectable Call Tone Alerts • Keypad Lock
PACKAGE CONTENTS
• Backlit LCD Display • Key Beep
• Optional Headset Accessories
Depending on the model configuration, your
• Headset Jack
package should include:
• Roger Beep
GMR638-2
Two GMR638 Radios with Belt Clips
GMR638-2CK
Two GMR638 Radios with Belt Clips
One Dual Charging Cradle (RC6338)
Two Rechargeable Batteries (BP38)
One AC Adapter (AD-0001)
GMR638-3CK
*Range may vary depending on environmental and/or topographical conditions.
Three GMR638 Radios with Belt Clips
One Dual Charging Cradle (RC6338)
GMR638 RADIO
One Single Charging Cradle (RC6488)
Three Rechargeable Batteries (BP38)
Two AC Adapters (AD-0001)
The following optional accessories may 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 - #BP38
• Charging Cradle - #RC6338 or RC6488
• Headset - #HS2467
• AC Adapter (AD-0001)
GMRS LICENSE
The GMR638 radio operates on the General
1 Antenna 13 Battery Level Meter
Mobile Radio Service (GMRS) frequencies when
2 PTT (Push-To-Talk) Button 14 Receive Indicator
using Channels 1-7 and channels 15-22. You
3 Monitor Key 15 Call Indicator
4 Call Key 16 Scan Indicator
must have a GMRS license issued by the Federal
5 Scan Key 17 Channel Indicator
Communications Commission to legally use
6 Channel Key 18 Transmit Indicator
these channels. For licensing information and
7 Speaker 19 Volume Setting Indicator
application forms, visit the FCC online at:
8 Headset Jack 20 VOX Indicator
9 On/Off/Select Key 21 GMRS/FRS Indicator
www.fcc.gov/wtb/uls or call the FCC hotline at
10 Volume Up (Default)/ 22 Keypad Lock Indicator
1-800-418-3676. If you have any questions, you
Channel Up Key 23 CTCSS Indicator
can contact the FCC direct at 1-888-225-5322.
11 Volume Down (Default)/ 24 Charging LEDs
No license is required for operation on channels
Channel Down Key 25 Charging Contacts
12 Microphone 8-14 or operation on any channel in Canada.
Note: The charge indicator LEDs will remain on as
INSTALL THE BATTERY
long as the radios are left in the charger.
Each GMR638 radio uses a NiMH battery pack (not
included with GMR638-2) or 4 AAA alkaline batter-
ies (not included). If you use alkaline batteries, we
USING THE RADIO
recommend high quality alkaline batteries.
In order to get the most out of your new radio, read this
To install the NiMH battery pack: reference guide completely before attempting to operate
the unit.
1) Make sure your radio is OFF.
2) Release the battery cover clip, then remove the
Turning the Radio On and Adjusting the Volume
battery cover. 1) Press and hold the sel/ key to turn the radio ON,
and increase the speaker volume by pressing the L
3) Install the NiMH battery pack into the battery
key. To decrease the volume, press the M key.
compartment. Be certain to follow the instruction
2) Press and hold the sel/ key again to turn the radio
written on the label on the battery pack.
OFF.
Installing the battery pack incorrectly will prevent
the unit from operating. Adjusting the Sound (Key Beeps)
4) Align the battery cover tabs with the GMR638 Your radio emits a beep each time one of the keys
tab holes then replace the cover clip. (except for the PTT button, and call key) is pressed.
To turn this sound OFF, press and hold the call key while
Note: Always make sure your battery pack is fully
turning ON the radio. Repeat this step to turn the sound ON.
discharged before recharging to prolong the life of
Navigating through the Menu
the battery pack. The LED will illuminate while the
radio is in the charging cradle.
To access the advanced features of the
GMR638, your radio has a Menu function.
BATTERY LEVEL AND
Normal CTCSS VOX Level Call Tone Key Lock
LOW BATTERY ALERT
This unit has a battery level meter on the display to OFF, 1-38 OFF, 1-3 1-5 ON-OFF
indicate the status of the batteries. When the battery in the
unit is low, the battery level meter icon will flash.
1) To enter the Menu, press the sel/ key.
Recharge the NiMH battery pack immediately or if you are
2) Additional presses of the sel/ key will advance
using the alkaline batteries, you must replace the alkaline
you through the Menu until exiting to "Normal"
batteries in order to continue using the radio.
operating mode.
Warning! To avoid the risk of personal injury or property 3) Other methods of exiting the Menu function are:
damage from fire or electrical shock, only use the Uniden a. Press and hold the sel/ key again.
accessories specifically designated for this product.
b. Press the PTT button, mon, call, scn, or ch key.
c. Wait 10 seconds until the unit automatically returns to
"Normal" mode.
USING THE CHARGING CRADLE
Choosing a Channel
Your radio has 22 channels and 38 CTCSS codes
You can use a charging cradle to recharge the BP38
you can use to talk to others. In order to speak to
batteries in your GMR638.
someone, each of you must set to the same
GMR638-2CK and GMR638-3CK includes charging
channel and CTCSS code.
cradle(s). Follow these
instructions to recharge the radios in a charging To choose a channel:
cradle. With the radio in "Normal" operating mode press the ch
key and press the L or M key to increase or decrease
Make sure to turn the radio OFF before placing
the radio in the charging cradle. Otherwise the
the channel number displayed.
battery level meter icon won't indicate properly.
Note: FRS channels 8-14 have an expectancy
range of up to 2 miles. GMRS channels 1-7, 15-22
1) Connect the AC adapter (# AD-0001) to DC IN
9V jack and to a standard 120V AC wall outlet. have an expectancy range of up to 6 miles.
You can know which GMRS or FRS channel is
2) Set the charging cradle on the desk or tabletop,
active by the icon. The icon indicates GMRS
and place the radio in the charging cradle with
the keypad facing forward. channel, and the icon indicates FRS channel.
3) Make sure that the LED illuminates. Charge the
battery pack for 16 hours and remove the radio
from the charging cradle after charge.
Choosing a CTCSS Code 3) Exit the Menu.
Each of the channels 1-22 may have any one of
To transmit the selected call tone, press the call
the codes, OFF or 1-38 selected. Code oF (OFF)
key. The selected tone will automatically be
indicates no CTCSS code selected and your radio
can receive a signal regardless of the code settings transmitted for a fixed length of time. Call Tone will
be cancelled when the PTT button is pressed.
of the transmitting radio.
Channel Scan Feature
1) Enter the Menu. The CTCSS code on the LCD
display will appear. Your GMR638 radio has a channel scan feature
2) Press the L or M key to increase or decrease
that allows you to easily scan all 22 channels.
the code number displayed. You can also select When an active channel is detected, the radio will
oF (OFF) at this stage. pause on that channel until the channel is clear.
3) Exit the Menu. Then after a 2 second delay, the radio will continue
scanning. Pressing the PTT button while the scan
Talking on Your Radio is paused on a channel will allow you to transmit on
that channel.
To talk to others using the radio:
1) Press and hold the PTT button and speak in a To turn ON channel scan:
clear, normal voice about 2-3 inches away from
Press the scn key the scan... icon is displayed.
the microphone. While you are transmitting, the
The channel number on the display will change as
icon will appear on the display. To avoid
the radio rapidly cycles through the channels.
cutting off the first part of your transmission,
To turn OFF channel Scan:
pause slightly after pressing the PTT button
Press the sel/ , call key, and PTT button or press
before you start talking.
the scn key.
2) When you have finished speaking, release the
PTT button. You can now receive incoming calls.
Key Lock
While receiving, the icon will appear on the
display. To lock the keypad:
Normal
1) Enter the Menu. Advance through the Menu until
Voice Operated Transmission
the icon appears on the display. The current
Key Lock status oF (OFF) blinks on the display.
Your GMR638 radio is equipped with a user
selectable Voice Operated Transmitter (VOX) that 2) To switch the Key Lock mode from oF (OFF) to
on, press the L key.
can be used for automatic voice transmissions. The
VOX feature is designed to be used with a headset 3) To confirm the setting, press the sel/
with a microphone. Transmission is initiated by The radio returns to the "Normal" mode.
speaking into the remote microphone instead of
Note: If you exit the setting mode before confirming
pushing the PTT button.
your selection by pressing the sel/
To select the VOX level: Lock setting will be set to oF (OFF).
1) Enter the Menu. Advance through the Menu until
To unlock the keypad:
the vox icon appears on the display. The current
level (OFF, 1-3) will be indicated. Level oF (OFF) 1) Press and hold the sel/ key to turn the radio
OFF.
disables VOX, while levels - set the
sensitivity of the VOX circuit. 2) Press and hold the sel/ key again to turn the
2) Press either the L or M key to the desired VOX
radio ON. The keypad is unlocked.
sensitivity level. Use level 1 for increased
sensitivity to voice in normally quiet Automatic Power Save Feature
environments, and use a higher level to reduce Your GMR638 radio has a unique circuit designed
undesired activation in very noisy environments.
to dramatically extend the life of the batteries. If
3) Exit the Menu. there is no transmission nor an incoming call within
3 seconds, your radio switches to the Power Save
Transmitting a Call Tone
mode. The radio is still able to receive transmis-
Your GMR638 radio is equipped with 5 selectable sions in this mode.
call tones that will be transmitted when the call key
LCD Backlight
is pressed.
The LCD Backlight will automatically turn ON when
To select a call tone:
any key (except the PTT button is pressed. The
1) Enter the Menu. Advance through the Menu until
LCD display will illuminate for 10 seconds before
the call icon is shown on the display. The current
turning OFF.
call tone number ( - ) will be 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.
key.
key, the Key