Uniden GMR638-2 English Owners Manual

Choosing a Channel

Your radio has 22 channels and 38 CTCSS codes

you can use to talk to others. In order to speak to

someone, each of you must set to the same

channel and CTCSS code.

To choose a channel:

With the radio in "Normal" operating mode press the

ch

key and press the

▲

or

▼

key to increase or decrease

the channel number displayed.

Note:

FRS channels 8-14 have an expectancy

range of up to 2 miles. GMRS channels 1-7, 15-22

have an expectancy range of up to 6 miles.

You can know which GMRS or FRS channel is

active by the icon. The

icon indicates GMRS

channel, and the

icon indicates FRS channel.

GMR638-2

GMR638-2CK

GMR638-3CK

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

•

15 GMRS / 7 FRS Channels

•

38 CTCSS Codes

•

Up to 6 Mile Range*

•

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 Key

4

Call Key

5

Scan Key

6

Channel Key

7

Speaker

8

Headset Jack

9

On/Off/Select Key

10

Volume Up (Default)/

Channel Up Key

11

Volume Down (Default)/

Channel Down Key

12 Microphone

13

Battery Level Meter

14

Receive Indicator

15

Call Indicator

16

Scan Indicator

17

Channel Indicator

18

Transmit Indicator

19

Volume Setting Indicator

20

VOX Indicator

21

GMRS/FRS Indicator

22

Keypad Lock Indicator

23

CTCSS Indicator

24

Charging LEDs

25

Charging Contacts

Congratulations on your purchase of the Uniden

GMR638 Series (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.

PACKAGE CONTENTS

Depending on the model configuration, your

package should include:

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

Three GMR638 Radios with Belt Clips

One Dual Charging Cradle (RC6338)

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

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

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

recommend high quality alkaline batteries.

To install the NiMH battery pack:

1) Make sure your radio is OFF.

2) Release the battery cover clip, then remove the

battery cover.

3) Install the NiMH battery pack into the battery

compartment. Be certain to follow the instruction

written on the label on the battery pack.

Installing the battery pack incorrectly will prevent

the unit from operating.

4) Align the battery cover tabs with the GMR638

tab holes then replace the cover clip.

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 radio ON,

and increase the speaker volume by pressing the

▲

key.To decrease the volume, press the

▼

key.

2)

Press and hold the

sel/

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.

Navigating through the Menu

To access the advanced features of the

GMR638, your radio has a Menu function.

•

Battery Charger

•

Battery Level Meter

•

Channel Monitor

•

Channel Scan

•

Keypad Lock

•

Key Beep

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

will flash.

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.

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

button,

mon

,

call

,

scn

, or

ch

key.

c. Wait 10 seconds until the unit automatically returns to

“

Normal

”

mode.

Choosing a CTCSS Code

Each of the channels 1-22 may have any one of

the codes, OFF or 1-38 selected. Code

oF

(OFF)

indicates no CTCSS code selected and your radio

can receive a signal regardless of the code settings

of the transmitting radio.

1) Enter the Menu. The CTCSS code on the LCD

display will appear.

2) Press the

▲

or

▼


the code number displayed.You can also select

oF

(OFF) at this stage.

3) Exit the Menu.

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 have finished speaking, release the

PTT

button.You can now receive incoming calls.

While receiving, the

icon will appear on the

display.

Voice Operated Transmission

Your GMR638 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, 1-3) will be indicated. Level

oF

(OFF)

disables VOX, while levels

-

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.

3) Exit the Menu.

Transmitting a Call Tone

Your GMR638 radio is equipped with 5 selectable

call tones that will be transmitted when the

call

key

is pressed.

To select a call tone:


the

call

icon is shown on the display.The current

call tone number (

-

) will be indicated.

2) Press the

▲

or

▼


the number to the desired call tone. Each tone

will be heard through the speaker.

Normal

Normal

CTCSS

VOX Level

Call Tone

Key Lock

1-5

OFF, 1-38

OFF, 1-3

ON-OFF

GMR638 RADIO

USING THE CHARGING CRADLE

You can use a charging cradle to recharge the BP38

batteries in your GMR638.

GMR638-2CK and GMR638-3CK includes charging

cradle(s). Follow these

instructions to recharge the radios in a 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 (# 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 charge.

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.

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. Call Tone will

be cancelled when the

PTT

button is pressed.

Channel Scan Feature

Your GMR638 radio has a channel scan feature

that allows you to easily scan all 22 channels.

When an active channel is detected, the radio will

pause on that channel until the channel is clear.

Then after a 2 second delay, the radio will continue

scanning. Pressing the

PTT

button while the scan

is paused on a channel will allow you to transmit on

that channel.

To turn ON channel scan:

Press the

scn

key 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 Scan:

Press the

sel/

,

call

key, and

PTT

button or press

the

scn

key.

Key Lock

To lock the keypad:


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

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

oF

(OFF)

.

To unlock the keypad:

1)

Press and hold the

sel/

key to turn the radio

OFF.

2) Press and hold the

sel/

key again to turn the

radio ON. The keypad is unlocked.

Automatic Power Save Feature

Your GMR638 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 transmis-

sions in this mode.

LCD Backlight

The LCD Backlight will automatically turn ON when

any key (except the

PTT

button is pressed. The

LCD display will illuminate for 10 seconds before

turning OFF.

Note:

The charge indicator LEDs will remain on as

long as the radios are left in the charger.

Uniden GMR638-2 English Owners Manual

Uniden GMR638-2 Manual

Uniden GMR638-2 manual content summary: