Uniden GMR648-2CK 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/scan

key and press the

▲

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 3 miles.

Channels 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 scanning GMRS channel,

and the

icon indicates scanning FRS channel.

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

▼

key to increase or decrease

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.

GMR648-2CK

*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

WX/Alert Key

6

Channel/Scan Key

7

Speaker

8

Headset Jack

9

Up Key

10

On/Off/Select Key

11 Microphone

12

Down Key

13

Battery Level Meter

14

Receive Indicator

15

Call Indicator

16

Scan Indicator

17

Channel Indicator

18

Alert Indicator

19

Weather Indicator

20

Transmit Indicator

21

Volume Setting Indicator

22

VOX Indicator

23

GMRS/FRS Indicator

24

Keypad Lock Indicator

25

CTCSS Indicator

26

Charging contacts

27

Charging LED

Congratulations on your purchase of the Uniden

GMR648-2CK (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

Your package contains two GMR648-2CK radios,

two rechargeable NiMH battery packs (#BP38), two

AC adapters (#AD-0001), two charging cradles

(#RC6488), two belt clips and this reference guide.

You may operate the unit using the rechargeable

NiMH battery pack or 4 AAA alkaline batteries

(not included). 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 Thanks giving and

Christmas--9 am to 5 pm, CST).

Use only Uniden

accessories.

•

NiMH Battery Pack - #BP38

•

Charging Cradle - #RC6488

•

Headset - #HS2467

GMRS LICENSE

The GMR648-2CK 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

Your GMR648-2CK radio uses the 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 allowing the door to be

removed.

3) Install the NiMH battery pack into the battery

compartment. Be certain to follow the instruction

written on the label on the battery pack.

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 GMR648-2CK,

your radio has a Menu function.

•

Battery Charger

•

Battery Level Meter

•

Channel Monitor

•

Channel Scan

•

Keypad Lock

•

NOAA Emergency /

Weather Channels

•

Emergency Weather Alert

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

,

mon

,

call

,

wx/alert

, or

ch/scan

key

c. Wait 10 seconds until the unit automatically returns to

“

Normal

”

mode.

Voice Operated Transmission

Your GMR648-2CK 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, 1-3) 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 GMR648-2CK 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

▼

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. Call Tone will

be cancelled when the

PTT

button is pressed.

Channel Scan Feature

Your GMR648-2CK 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 and hold the

ch/scan

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 Scan:

Press the

sel/

,

call

,

PTT

, or

wx/alert

key, or

press and hold the

ch/scan

key for 2 seconds.

Normal

Normal

CTCSS

VOX Level

Call Tone

Key Lock

1-5

OFF, 1-38

OFF, 1-3

ON-OFF

GMR648-2CK RADIO

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:


sel/

key to turn the radio

OFF.


sel/

key again to turn the

radio ON. The keypad is unlocked.

Automatic Power Save Feature

Your GMR648-2CK 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 the

PTT

button) is pressed. The LCD

display will illuminate for 10 seconds before turning

OFF.

Monitor Mode Feature

Your GMR648-2CK 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 and weak signals.

To turn OFF Monitor Mode:

Press

mon

to return to "Normal" mode, and the

icon stop blinking.

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

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 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.

USING THE CHARGING CRADLE

If you use the rechargeable NiMH battery pack, two

GMR648-2CK 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 (# 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:

The charge indicator LED will remain on as

long as the radios are left in the charger.

Installing the battery pack incorrectly will prevent

the unit from operating.

4) Replace the battery compartment door.

Key Lock

To lock the keypad:


the

icon appears on the display.The current

Key Lock status

oF

(OFF) blinks on the display.

Uniden GMR648-2CK English Owners Manual

Uniden GMR648-2CK Manual

Uniden GMR648-2CK manual content summary: