Cobra PR4250WX Service Manual

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Page 1

English

Making Life Easier & Safer

Owner’s Manual

Nothing Comes Close To A Cobra

English

2-WAYRADIO MODEL

PR4250WX

Printed in China

Part No. 480-115-P

Revise 11.03

Introduction

Staying in touch with your family and friends is convenient and easy when using your microTALK

radio. Some of the many uses you will discover include:

Communicating with others while hiking, biking, and working; keeping track of family and friends at a crowded public event; checking with travel companions in another car; talking with neighbors; arranging meeting spots with others while shopping at the mall.

Secure your microTALK

radio while on the go.

Carrying your microTALK®radio with you is easy when using the belt clip or wrist strap.

The belt clip easily attaches to your belt, purse, or backpack. Simply squeeze the clip and place it where you prefer.

For Assistance In the U.S.A.

In this user’s manual, you should find all the information you need to operate your microTALK

radio. If you require further assistance

after reading this manual, Cobra

Electronics offers the following

customer assistance services:

Automated Help Desk

English only. 24 hours a day, 7 days a week 773-889-3087 (phone).

Customer Assistance Operators

English and Spanish. 8:00 a.m. to 6:00 p.m. CT, Monday through Friday (except holidays) 773-889-3087 (phone).

Questions

English and Spanish. Faxes can be received at 773-622-2269 (fax).

Technical Assistance

English only. www.cobra.com (on-line: Frequently Asked Questions). English and Spanish. productinfo

@cobra.com (e-mail).

For Assistance Outside the U.S.A.

Contact Your Local Dealer

Belt Clip

Wrist Strap

Customer Assistance

6500 West Cortland Street

Chicago, Illinois 60707 USA

www.cobra.com

Page 2

Battery

Compartment

Battery Door

Latch

Belt Clip

Wrist Strap

Connector

Operation

Customer Assistance

Warranty

Nothing comes close to a Cobra

Introduction

English

Product Features

English

Product Features

Introduction

Compass

Button

Backlit LCD Display

Channel Up/Down

Buttons

Speaker/ Microphone

Call

Button

Mode

Button

Antenna

Key Lock

Button

Hi•Med•Low

Power Button

External Speaker/ Microphone Jack

Light/

Max Range

Button

Talk

Button

On/Off Volume

Knob

Charger

Jack

Introduction

Backlit LCD Display

Important FCC Licensing Information

This radio operates on General Mobile Radio Service (GMRS) frequencies which require a Federal Communications Commission (FCC) license. See page 26 for licensing and other related information.

Receive/ Transmit

Tower Icon

Hi•Med•Low

Power Icon

Lock Icon

Keystroke Tones Icon

Call Tones and VibrAlert™Icon

NOAA All

Hazards Alert Icon

Roger Beep Icon

Signal Strength

Meter Icon

Memory Icon

Battery Level

Indicator

Main Channel

Numbers

Power Saver Icon

CTCSS Privacy Code Numbers

Alarm Icon

Vox Icon

Scan Icon

NOAA All Hazards Radio Icon

Stopwatch Icon

Compass Icon

AM/PM Indicators

Memory Location

Features

• Two-Way Radio

with up to a ten (10) mile (16 km) range

• 22 Channels

(7 shared with FRS/GMRS, 7 FRS only, 8 GMRS only)

• 38 PRIVACY Codes

• 10 CHANNEL

NOAA All Hazards Radio

• NOAA All Hazards Alert

• 8-Point Digital Compass

• Clock/Alarm

• Stopwatch with Split-timer

• Hands-Free

Operation (VOX)

• VibrAlert

Silent Paging

• Signal Strength Meter

• 10 Channel Memory

• Scan (channel, privacy code, memory)

• Selectable

Hi•Med•Low Power (in GMRS)

• Backlit LCD Display

• Call Alert (10 selectable tones)

• Lock

• Speaker/

Microphone Jack

• “Roger Beep” (selectable On/Off)

• Battery/Power Saver

• Keystroke Tones (selectable On/Off)

• Auto Squelch

• Maximum Range

Extender

• Belt Clip

• Wrist Strap

Caring for Your microTALK®Radio

•

Your microTALK

radio will give you years of trouble-free service if cared for properly. Handle the radio gently. Keep the radio away from dust. Never put the radio in water or in a damp place. Avoid exposure to extreme temperatures.

Batteries

•

To Install or Replace Batteries:

1. Remove belt clip by releasing belt clip latch and sliding clip down.

2. Pull down on the Battery Door Latch to remove the battery compartment cover.

3. Insert four (4) AA batteries. (Always use high quality alkaline batteries.) Position batteries according to polarity markings.

4. Replace Battery Compartment cover and belt clip.

See information on page 28 for optional charger accessories ordering instructions.

Insert Batteries

Pull Down LockLatch

Remove Belt Clip

The Basics to Get You Started

Your microTALK

radio is easy to use.

To get started, simply:

1. Rotate the On/Off Volume knob to turn On your radio.

2. Press the Channel Up or Channel Down button to select a channel.

Both radios must be tuned to the same channel to communicate.

3. Press and hold the Talk button while speaking into the microphone.

4. When finished talking, release the Talk button and listen for a response.

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Operation

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Using Your Radio

Turning On Your microTALK®Radio

•

To Turn On Your Radio:

1. Rotate the On/Off Volume knob clockwise

to turn On your radio and adjust the volume. A series of tones will indicate the radio is On.

Your microTALK

radio is now in Standby Mode,

ready to receive transmissions. The radio is always in Standby Mode, except when the Talk, Call or Mode buttons are pressed.

Battery Low

•

Your microTALK

radio has a battery level meter that shows when battery power is decreasing. The greater the number of ascending bars visible, the stronger the battery level. When the battery level is low, the last bar will flash indicating your batteries should be replaced or recharged, if using rechargeable batteries.

Auto Battery Save

•

Your microTALK

radio has a unique circuit designed to extend battery life. If there are no transmissions within ten (10) seconds, the radio will automatically switch to Battery Save Mode and Power Saver icon will flash in the display. This will not affect the radio’s ability to receive incoming transmissions.

Communicating with Another Person

•

To Talk To Another Person:

1. Press and hold the Talk button.

2. With the microphone about two (2)

inches (5 cm) from your mouth, speak in a normal voice.

3. Release the Talk button when you are

finished talking and listen for a response.

You cannot receive incoming calls while pressing the Talk button.

Both radios must be tuned to the same channel to communicate.

Scrolling Through the Mode Function

•

By scrolling through the Mode function, you will be able to select or turn On preferred features of your microTALK

radio. When scrolling through the Mode function, your radio features will be displayed in the same predetermined order:

Set Privacy Codes Set NOAA All Hazards Radio Channel Set NOAA All Hazards Alert Set Stopwatch Set Clock Set Alarm Set VOX On/Off Set VOX Sensitivity Level Set Memory Location Set Channel Scan Set Privacy Code Scan Set Memory Scan Set VibrAlert

and/or Call Alert Set Call Tones Set “Roger Beep” On/Off Set Keystroke Tones On/Off

Channels

•

To Select a Channel:

1. With the radio On, select any of the

22 channels by pressing the Channel Up or Channel Down button.

Both radios must be tuned to the same channel to communicate.

Channels 1 through 7 are shared with FRS/ GMRS. Channels 8 through 14 are FRS only. Channels 15 through 22 are GMRS only.

See page 25 for FRS/GMRS frequency allocations and compatibility charts.

On/Off Power

Battery Low

Battery Save Mode

Talk Button

Mode Button

Channel Button

Channel Number

Operation

2 inches (5 cm) From Mouth

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Using Your Radio

CTCSS Privacy Codes

•

CTCSS (Continuous Tone Coded Squelch System) is an advanced tone coding system allowing you to select one of 38 privacy codes to reduce interference from other users on the channel.

If you are using a privacy code, both radios must be tuned to the same channel and privacy code to communicate. Each channel will remember the last privacy code you selected.

To Select a Privacy Code:

1. After selecting a channel, press the Mode

button until the small numbers next to the channel number flash on the LCD.

2. Press the Channel Up or Channel Down button to select a privacy code. You can hold the Up or Down button for fast advance.

3. When your desired privacy code is displayed: a. Press the Mode button to enter the new

setting and proceed to other functions.

b. Press the Lock button to enter the new

setting and return to Standby Mode.

c. Do not press any buttons for 15 seconds

to enter the new setting and return to Standby Mode.

Listening for a Response

•

When You are Finished Talking:

1. Release the Talk button to receive incoming transmissions. Your microTALK

radio is

always in Standby Mode while the Talk or Call buttons are not pressed.

Volume

•

To Adjust the Volume:

1. Rotate the On/Off Volume knob.

Call Button

•

To Alert Another Person That You Are Calling:

1. Press and release the Call button. The other person will hear a two (2) second

call tone. You cannot send or receive transmissions during the two (2) second call tone.

See page 19 on how to select between ten (10) call tone settings.

Selectable High•Medium•Low Power Output

•

When in close proximity to another party or during favorable conditions, you can switch from High to Medium to Low Power to extend battery life.

This feature applies to GMRS channels 1 through 7 and 15 through 22 only. Channels 8 through 14 operate exclusively on Low Power.

To Switch from High to Medium to Low Power:

1. Press and release the Hi•Med•Low button. When in High Power and using channels

1 through 7 and 15 through 22, the Hi icon will be visible in the LCD display.

When in Medium Power and using channels 1 through 7 and 15 through 22, the Med icon will be visible in the LCD.

When in Low Power and when using channels 8 through 14, the Low icon will be visible in the LCD display.

Mode Button

Channel Button

Privacy Code

Listening

Volume Knob

Call Button

Hi•Med•Low Button

Low Power Icon

Med Power Icon

Hi Power Icon

Operation

38 Privacy Codes

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Using Your Radio

NOAA* All Hazards Radio Channels and Alert

•

You can use your microTALK

radio to listen to NOAA All Hazards Radio channels transmitting in your area.

You can also program your microTALK

radio to sound a tone alert when a local NOAA channel activates an Emergency All Hazards Alert. This will warn you of weather, chemical, and other civilian emergencies.

To Listen to All Hazards Radio channels:

1. Press the Mode button until the Weather

(All Hazards Radio) icon, the currently selected All Hazards Radio channel, and signal strength are displayed.

2. Use the Channel Up or Channel Down

button to change All Hazards Radio channels.

3. Weather (All Hazards Radio) icon will continue

to be displayed when All Hazards Radio is On. a. Press the Mode button to proceed

to other functions.

b. Press the Lock button to exit All

Hazards Radio channel mode and return to Standby Mode.

To Turn On All Hazards Alert:

1. Press the Mode button until the Alert icon flashes

and the current On or Off setting is displayed.

2. Press the Channel Up or Channel Down

button to turn All Hazards Alert On or Off.

3. Alert icon will continue to be displayed

when All Hazards Alert is On. a. Press the Mode button to enter the new

setting and proceed to other functions.

b. Press the Lock button or do not press any

buttons for 15 seconds to enter the new setting and return to Standby Mode.

c. Press the Talk button to enter the new

settings and return to Standby Mode.

*National Oceanographic and Atmospheric Administration

Stopwatch

•

You can use the time keeping feature of your microTALK

radio as a stopwatch, including the display of split times. After starting the timer, you can view an interim “split” time while the first timer continues to run.

To Activate Stopwatch Mode:

1. Press the Mode button until the Stopwatch

icon and “OO:oo:oo” is displayed in the LCD.

2. Press the Channel Up button to

start the stopwatch.

3. Press the Channel Up button again

to stop the stopwatch.

To restart and stop the stopwatch, repeat step 2 and 3.

4. Press the Mode button to exit Stopwatch

Mode and proceed to other functions.

To Activate Split-Time in Stopwatch Mode:

1. Press the Mode button until the Stopwatch

icon and “OO:oo:oo” is displayed in the LCD.

2. After starting the stopwatch (see above),

press the Channel Down button to start the split-time timer. The display will stop, but the stopwatch will continue in the background.

3. Press the Channel Down button to return

to the stopwatch. (To stop the stopwatch, see above.)

To restart and stop the Split-Timer, repeat step 2 and 3.

4. Press the Mode button to exit Stopwatch

Mode and proceed to other functions.

Hazards Radio Icon

Channel Button

Channel Up

Mode Button

Alert Icon

Channel Button

Mode Button

Stopwatch Icon

Operation

Alert Icon

Hazards Radio Icon

Mode Button

Channel Down

Stopwatch Icon

Mode Button

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Using Your Radio

To reset the display to “OO:oo:oo,” press the Lock button.

While in Stopwatch Mode, your microTALK

radio will alert you to incoming calls, but the LCD will continue to show the stopwatch display. You can also transmit as normal with the Talk button or in VOX Mode. When you do, the LCD will automatically return to normal display. Once you have finished transmitting, the radio will automatically return to Stopwatch Mode.

The Compass operation cannot be used while in Stopwatch Mode.

Clock

•

Your microTALK

radio displays the current

time and appropriate AM/PM indication.

To Activate Clock Mode:

1. Press the Mode button until the clock is displayed.

2. Press the Mode button to exit Clock Mode

and proceed to other functions.

To Set the Clock:

1. While in Clock Mode, press the Lock button.

The hour will flash on the display.

2. Press the Channel Up or Channel Down

button to set the hour.

3. Repeat steps 1 and 2 to set minutes and AM/PM.

4. Press the Mode button to exit the Set Clock feature and proceed to other functions.

While in Clock Mode, your microTALK

radio will alert you to incoming calls, but the LCD will continue to show the Clock display. You can also transmit as normal with the Talk button or in VOX Mode. When you do, the LCD will automatically return to normal display. Once you have finished transmitting, the radio will automatically return to Clock Mode.

The Compass operation cannot be used while in Clock Mode.

Alarm

•

You can use the time keeping feature of your microTALK

radio as an alarm.

To Activate Your microTALK

Radio Alarm:

1. Press the Mode button until the Alarm

icon flashes and the current On or Off setting is displayed.

2. Press the Channel Up or Channel Down

button to turn the alarm On or Off.

To Set the Alarm:

1. Press the Mode button until the Alarm

icon flashes and the current On or Off setting is displayed.

2. Press the Lock button. The hour will flash.

3. Press the Channel Up or Channel Down

button to set the hour.

4. Repeat steps 2 and 3 to set minutes and AM/PM.

5. a. After setting AM/PM, press the Lock

button to enter the Alarm time, turn Alarm setting On and to return to Standby Mode.

b. Press the Mode button to enter the

Alarm time, turn Alarm setting On and proceed to other functions.

c. Press the Talk button to enter the Alarm

time, turn Alarm setting On and return to Standby Mode.

Clock Mode

Mode Button

Lock Button

Alarm Set Hour

Set Clock

Alarm Icon

Mode Button

Alarm Icon

Operation

Lock Button

Channel Button

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Using Your Radio

Voice Activated Transmit (VOX)

•

In VOX Mode, your microTALK

radio can be used “hands-free,” automatically transmitting when you speak. You can set the VOX sensitivity level to fit the volume of your voice and avoid transmissions triggered by background noise.

To Turn VOX Mode On or Off:

1. Press the Mode button until the VOX icon

flashes on the LCD. The current On or Off setting is displayed.

2. Press the Channel Up or Channel Down

button to turn VOX On or Off.

3. a. Press the Mode button to enter the

selected On or Off setting and proceed to other functions.

b. Press the Lock button to enter the

selected On or Off setting and return to Standby Mode.

To Set the Sensitivity:

1. Press the Mode button until the VOX

icon flashes and the current sensitivity level is displayed.

The current sensitivity level is displayed with letters LE and a number 1 through 5, 5 being the most sensitive level and 1 being the least sensitive level.

2. Press the Channel Up or Channel Down

button to change the setting.

3. a. Press the Mode button to enter the selected

setting and proceed to other functions.

b. Press the Lock button to enter the selected

setting and return to Standby Mode.

10 Channel Memory

•

Your microTALK

radio has ten (10) memory locations (1 through 10) for storing your most frequently used channels and privacy codes. These memory channels can be selected individually or can be scanned (see Using Scan, page 18).

To Program Locations:

1. Press the Mode button until the Memory icon

and the memory channel location (1 through

10) flashes on the display screen.

2. Press the Channel Up or Channel Down

button to set the memory channel location (1 through 10).

3. Press the Lock button to enter the memory

channel location. The channel numbers will flash.

4. Press the Channel Up or Channel Down button

to set the channel (1 through 22).

5. Press the Lock button to enter the channel

setting. The privacy code numbers will flash.

6. Press the Channel Up or Channel Down button

to set the privacy code (00 through 38).

7. Press the Lock button to enter the privacy

code setting.

8. a. Press the Mode button to enter the

memory channel setting and proceed to other functions.

b. Press the Talk button to enter the memory

channel setting and return to Standby Mode.

To clear or un-program a memory location, set both the channel and the privacy code to “00.”

VOX Sensitivity Level

Lock Button

Operation

VOX Icon

Mode Button

Memory Icon

Mode Button

Channel Button

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Using Your Radio

To Recall a Stored Memory Channel Location:

1. Press the Mode button until the Memory icon

and the memory channel location (1 through

10) flashes on the display.

2. Press the Channel Up or Channel Down button

to select a memory channel location.

3. a. Press the Talk button to transmit on the

selected memory channel and return to Standy Mode on that memory channel.

b. Press the Mode button to exit the Memory

Mode without changing the memory channel setting and proceed to other functions.

Scan

•

Your microTALK

radio can automatically scan main channels (1 through 22) or the privacy codes (00 through 38) within one (1) main channel, or memory locations.

To Scan Main Channels:

1. Press the Mode button until the Scan icon and

the main channel number flashes on the display.

2. Press the Channel Up or Channel Down button

to begin scanning the main channels.

The radio ignores privacy codes while scanning main channels.

3. The Scan icon will continue to be displayed

when scan is On. Your radio will continue to scan all main channels and stop if an incoming transmission is detected. Your radio will remain on that channel for ten (10) seconds. During this time, you can:

a. Press and hold the Talk button to communicate

with others. Your radio will remain on that channel and return to Standby Mode.

b. Press the Channel Up or Channel Down

button to resume scanning channels.

c. Press the Mode button to proceed to privacy

code scanning (see page 17 for further details).

If you press the Talk button while scanning and not within ten (10) seconds of receiving transmission, you will transmit on the last channel you transmitted or received on.

If you do not press any button within ten (10) seconds, your radio will automatically resume scanning main channels.

To Scan Privacy Codes:

1. While in Standby Mode, press the Channel Up or Channel Down button to choose the main channel you wish to scan.

2. Press the Mode button until the Scan icon and the privacy code number flashes on the display.

3. Press the Channel Up or Channel Down button and your radio will begin scanning privacy codes within the main channel you selected.

4. The Scan icon will continue to be displayed when scan is On. Your radio will continue to scan privacy codes and stop as incoming transmission is detected. Your radio will remain on that channel and privacy code for ten (10) seconds. During this time, you can:

a. Press and hold the Talk button to

communicate with others. Your radio will remain on that channel and privacy code and return to Standby Mode.

b. Press the Channel Up or Channel Down

button to resume scanning privacy codes.

c. Press the Mode button to proceed to memory

scanning (see page 18 for further details).

If you press the Talk button while scanning (see page 16 for further details) and not within ten (10) seconds of receiving transmission, you will transmit on the last channel you transmitted or received on.

If you do not press any button within ten (10) seconds, your radio will automatically resume scanning privacy codes.

Channel Button

Mode Button

Select Channel

Scan Privacy Codes

Operation

Memory Icon

Mode Button

Channel Button

Scanning Channels

Mode Button

Channel Button

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Using Your Radio

To Scan Memory Locations:

1. Press the Mode button until the Scan icon,

Memory icon, and the memory location number flashes on the display.

2. Press the Channel Up or Channel Down

button and your radio will begin scanning memory locations.

3. The Scan icon will continue to be displayed when scan is on. Your radio will continue to scan memory locations and stop if an incoming transmission is detected. Your radio will remain on that memory location for ten (10) seconds. During this time, you can:

a. Press and hold the Talk button to

communicate with others. Your radio will remain on that memory location and return to Standby Mode.

b. Press the Channel Up or Channel Down

button to resume scanning memory locations.

c. Press the Mode button to proceed to

next available Mode function.

If you press the Talk button while scanning and not within ten (10) seconds of receiving transmission, you will transmit on the last channel you transmitted or received on.

If you do not press any button within ten (10) seconds, your radio will automatically resume scanning memory locations.

If you want to reduce the number of memory locations being scanned, you need to “un-program” all unwanted locations by changing both the main channel and privacy code to “00.” See page 15 for more details.

You must have at least two (2) memory locations programmed in order to scan memory locations.

VibrAlert®and Call Tones

•

Your microTALK

radio can alert you to incoming signals by sounding an audible call tone, by vibrating silently, or both.

To Change Call Settings:

1. Press the Mode button until the Call Setting

icon flashes on the LCD. The current setting (Vibrate + Ring, Vibrate Only, or Ring Only) is displayed.

2. Press the Channel Up or Channel Down

button to change the call setting.

3. a. Press the Mode button to enter the new

setting and proceed to other functions.

b. Press the Lock button to enter the new

setting and return to Standby Mode.

10 Call Tone Settings

•

You can choose between ten (10) different call tone settings to transmit a unique call alert.

To Change a Call Tone Setting:

1. Press the Mode button until the letter “C”

and the current call tone number (1 through

10) is displayed. The current call tone will sound for one (1) second.

2. Press the Channel Up or Channel Down

button to hear the other call tone settings.

3. a. Press the Mode button to enter the new

setting and proceed to other functions.

b. Press the Lock button to enter the new

setting and return to Standby Mode.

Operation

Mode Button

Scanning Memory

Channel Button

Mode Button

Ring Only

VibrAlert®+ Ring

VibrAlert®Only

Channel Button

Mode Button

Call Tone Setting

Channel Button

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Using Your Radio

Customer Assistance WarrantyIntroduction

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Operation

“Roger Beep” Confirmation Tone

•

Your listener will hear an audible tone when you release the Talk button. This alerts the other party that you are finished talking and it is OK for them to speak. This feature can be turned On or Off.

To Turn “Roger Beep” On or Off:

When turning On your microTALK

radio

for the first time, “Roger Beep” will be On.

1. Press the Mode button until the Roger

Beep icon flashes on the LCD. The current On or Off setting is displayed.

2. Press the Channel Up or Channel Down

button to select “Roger Beep” On or Off.

3. a. Press the Mode button to enter the new

setting and proceed to other functions.

b. Press the Lock button to enter the new

setting and return to Standby Mode.

The setting you select will be saved when you turn your radio Off and On again. When the “Roger Beep” is On, the “Roger Beep” icon will be displayed.

Keystroke Tones

•

With Keystroke Tones turned On, your radio will sound beeps each time you press a button or change a setting.

To Change Keystroke Tones:

1. Press the Mode button until the Keystroke

Tones icon flashes on the LCD. The current On or Off setting is displayed.

2. Press the Channel Up or Channel Down

button to turn Keystroke Tones On or Off.

3. a. Press the Mode button to enter the new

setting and proceed to other functions.

b. Press the Lock button to enter the new

setting and return to Standby Mode.

8-Point Digital Compass

•

Your microTALK

radio features an 8-point digital compass.

Because the surrounding terrain can affect compass accuracy, it is recommended that you calibrate the compass before each use. It is important to keep the radio parallel to the ground at all times while calibrating and using the compass.

To Calibrate the Compass:

1. Press and hold the Compass button for two

(2) seconds. The Compass icon and “CALIbr” will appear in the display.

2. Hold the radio in front of you, parallel to the

ground, and turn around in a circle at least two (2) times (or you may place the radio on the palm of one of your hands, parallel to the ground, and turn it in a circle at least two (2) times with your other hand).

3. Press the Compass button again.

4. a. If compass calibration was successful,

“SUCCES” will appear in the display for one (1) second, then the radio will automatically return to Compass Mode.

b. If “FAIL” appears in the LCD, repeat steps

1 through 3. (If you receive repeated “FAIL” messages, change locations and repeat steps 1 through 3.)

CALIbr Compass

Compass Button

Success

Fail

Compass Icon

Parallel To Ground

Operation

Mode Button

Roger Beep On

Channel Button

Mode Button

Keystroke Tones On

Channel Button

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Using Your Radio

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Operation

To Use Your Compass:

1. After proper calibration (see page 21), press and

release the Compass button. The Compass icon and your current direction will be displayed.

The radio must always be parallel to the ground to give accurate directional readings. The direction of the antenna is the direction displayed in the LCD.

To exit Compass Mode and return to Standby Mode, press and release the Compass button.

Display Illumination

•

To Illuminate Your Display:

1. Press and release the Light/Max Range button

to illuminate the display for ten (10) seconds.

Auto Squelch/Maximum Range

•

Your microTALK

radio is equipped with Auto Squelch, which automatically shuts Off weak transmissions and unwanted noise due to terrain, conditions, or if you’ve reached your maximum range limit.

You can temporarily turn Off Auto Squelch or turn On Maximum Range Extender, allowing all signals to be received and extending the maximum range of your radio.

To Temporarily Turn Off Auto Squelch:

1. Press the Light/Max Range button less

than five (5) seconds.

If you hear two (2) beeps, you have turned the Maximum Range Extender On (see below).

To Turn Maximum Range Extender On:

1. Press and hold the Light/Max Range button

for at least five (5) seconds until you hear two (2) beeps which indicates the Maximum Range Extender is On.

To Turn Maximum Range Extender Off:

1. Press and release the Light/Max Range

button or change channels.

Lock Function

•

The Lock button locks the Channel, Mode, Compass and Hi•Med•Low Power buttons

to prevent accidental operation.

To Turn the Lock Button On or Off:

1. Press and hold the Lock button for

two (2) seconds.

A double beep sound is used to confirm your Lock On or Off request. When in Lock Mode, the Lock icon will be displayed.

Speaker/Microphone Jack

•

Your microTALK

radio can be fitted with an external Speaker/Microphone, freeing your hands for other tasks. See page 28 for optional accessories ordering instructions. Only Cobra

authorized accessories are

recommended.

To attach your Speaker/Microphone:

1. Open the Speaker/Microphone tab on

top of your microTALK

radio.

2. Insert the plug into the Speaker/

Microphone jack.

Signal Strength Meter

•

Your microTALK

radio has a signal strength meter that shows the strength of your incoming and outgoing transmissions. The ascending bars next to the signal strength indicate the strength of the signal. The greater the number of bars visible, the stronger the signal. The fewer number of bars visible, the weaker the signal.

Lock Button

Lock Mode

Speaker/Microphone

Signal Strength

Operation

Light/Max Range

Compass Button

Parallel To Ground

Current Direction

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Using Your Radio

Operation

microTALK®Range

•

Your microTALK

radio has a range of up to ten (10) miles (16 km). Your range will vary depending on terrain and conditions.

In flat, open country your radio will operate at maximum range.

Buildings and foliage in the path of the signal can reduce the range of the radio.

Dense foliage and hilly terrain will further reduce the range of the radio.

On FRS channels 8 through 14, your radio automatically switches to low power, which will limit the range the radio can communicate.

Remember, you can achieve maximum range by using Maximum Range Extender. See page 22 for details.

General Specifications

•

Maximum Range

Reduced Range

Nominal

Unit

Nominal

Unit

C. Transmitter

1. Power

GMRS . . . . . . . . . . . . . . . . . . . .W 3

FRS Only . . . . . . . . . . . . . . . . .mW 500

2. Carrier Frequency Stability . . . ±Hz 500

3. Modulation Limiting . . . . . . . . KHz 2.5

4. Carrier Attack Time . . . . . . . . . mS 80

5. Audio Frequency Response

@ 300 HZ . . . . . . . . . . . . . . . . . dB -12

@ 2500 HZ . . . . . . . . . . . . . . . . dB +6

6. Audio Distortion . . . . . . . . . . . . % 3

7. Hum Noise . . . . . . . . . . . . . . . . dB 30

8. Transient Frequency Behavior

a) TX On . . . . . . . . . . . . . . . . . mS 30

b) TX Off . . . . . . . . . . . . . . . . . mS 5

A. FRS/GMRS

Frequency Allocation and Compatibility

Important: Please note that Cobra®GMRS

models with 15 channels may designate different channel numbers for the same frequency.For example, a Cobra®15 channel GMRS model would need to be tuned to channel 11 in order to communicate with a 22 channel GMRS tuned to channel 15. Please refer to the chart below for channel/ frequency number compatibility.

A = Channel No. For

22 Channel GMRS Models

B = Channel No. For 15

Channel GMRS Models C = Type of Radio Service D = Frequency in MHz E = Power in Watts

a = 3.0/2.0/0.5 (selectable)

b = 0.5

AB C D E

1 1 FRS/GMRS 462.5625 a 2 2 FRS/GMRS 462.5875 a 3 3 FRS/GMRS 462.6125 a 4 4 FRS/GMRS 462.6375 a 5 5 FRS/GMRS 462.6625 a 6 6 FRS/GMRS 462.6875 a 7 7 FRS/GMRS 462.7125 a 8 FRS 467.5625 b

9 FRS 467.5875 b 10 FRS 467.6125 b 11 FRS 467.6375 b 12 FRS 467.6625 b 13 FRS 467.6875 b 14 FRS 467.7125 b 15 11 GMRS 462.5500 a 16 8 GMRS 462.5750 a 17 12 GMRS 462.6000 a 18 9 GMRS 462.6250 a 19 13 GMRS 462.6500 a 20 10 GMRS 462.6750 a 21 14 GMRS 462.7000 a 22 15 GMRS 462.7250 a

B. Receiver

1. Sensitivity

For 12 DB SINAD . . . . . . . . . . dBm -121

For Call Signal Detection . . . . dBm -121

2. Max. Audio Output

@10% THD . . . . . . . . . . . . . . . mW 200

3. Max. S/N Ratio

@ 1mV RF Input . . . . . . . . . . . dB 50

4. Squelch

a) Sensitivity . . . . . . . . . . . . . . dBm -121

b) Attack Time . . . . . . . . . . . . . mS 150

c) Closing Time . . . . . . . . . . . . mS 200

5. Audio Frequency Response

@ 300 HZ . . . . . . . . . . . . . . . . . dB -3

@ 2500 HZ . . . . . . . . . . . . . . . . dB -10

6. Signal Displacement BW . . . +/-KHz 5

7. Adjacent Channel Rejection . . . dB 60

8. Intermodulation Rejection . . . . dB 65

9. Spurious Response Rejection . dB 55

D. Power Supply

1. Battery Life (5:5:90 RATIO)

With Alkaline Batteries . . . . . . . HR 24

2. Battery Operating Range . . . . . . V 4.2 - 6.0

Nominal

Unit

Page 13

Operation WarrantyIntroduction

Nothing comes close to a Cobra

Customer Assistance

English

Licensing,Assistance &Warranty

IMPORTANT NOTICE: FCC LICENSE REQUIRED

This two-way radio operates on GMRS (General Mobile Radio Service) frequencies which require an FCC (Federal Communications Commission) license. A user must be licensed prior to operating on channels 1 through 7 or 15 through 22, which comprise the GMRS channels of this radio. Serious penalties could result for unlicensed use of GMRS channels, in violation of FCC rules, as stipulated in the Communications Act’s Sections 501 and 502 (amended).

Licensed users will be issued a call sign by the FCC, which should be used for station identification when operating this radio. GMRS users should also cooperate by engaging in permissible transmissions only, avoiding channel interference with other GMRS users, and being prudent with the length of their transmission time.

For licensing information and application forms, please call the FCC Hotline at 800-418-FORM. Request form #159 and form #605. Questions regarding the license application should be directed to the FCC at 888-CALL-FCC. Additional information is available on the FCC’s website at www.fcc.gov.

Safety Information for microTALK®Radios

Your wireless handheld portable transceiver contains a low power transmitter. When the Talk button is pushed, it sends out radio frequency (RF) signals. The device is authorized to operate at a duty factor not to exceed 50%. In August 1996, the Federal Communications Commissions (FCC) adopted RF exposure guidelines with safety levels for handheld wireless devices.

Important:

FCC RF Exposure Requirements: For body-worn operation, this radio has been tested and meets the FCC RF exposure guidelines when used with Cobra®accessories supplied or designated for this product. Use of other accessories may not ensure compliance with FCC RF exposure guidelines. Use only the supplied antenna. Unauthorized antennas, modifications, or attachments could damage the transmitter and may violate FCC regulations.

Normal Position:

Hold the transmitter approximately 2 inches from your face and speak in a normal voice, with the antenna pointed up and away.

Customer Assistance

If you have any questions about operation or installing your new Cobra

product, or if you are missing parts…

Please call Cobra

first! DO NOT RETURN THIS PRODUCT

TO THE STORE! See customer service on page 2.

Product Service Questions

If your product should require factory service, please call Cobra®first before sending your radio. This will ensure the fastest turn-around time on your repair. You may be asked to send your radio to the Cobra®factory. It will be necessary to furnish the following to have the product serviced and returned.

1) For Warranty Repair include some form of proof-of-purchase, such as a mechanical reproduction or carbon of a sales receipt. If you send the original receipt, it cannot be returned; 2) Send the entire product; 3) Enclose a description of what is happening with the radio. Include a typed or clearly printed name and address of where the radio is to be returned; 4) Pack radio securely to prevent damage in transit. If possible, use the original packing material; 5) Ship prepaid and insured by way of a traceable carrier such as United Parcel Service (UPS) or First Class Mail to avoid loss in transit to Cobra®Factory Service, Cobra®Electronics Corporation, 6500 West Cortland Street, Chicago, Illinois 60707 USA; 6) If the radio is in warranty, upon receipt of your radio it will either be repaired or exchanged depending on the model. Please allow approximately 3 – 4 weeks before contacting Cobra®for status. If the radio is out of warranty, a letter will automatically be sent informing you of the repair charge or replacement charge. If you have any questions, please call

773-889-3087 for assistance.

Limited 1-Year Warranty For Products Purchased in the U.S.A.

Cobra®Electronics Corporation warrants that its Cobra®GMRS Radios, and the component parts thereof, will be free of defects in workmanship and materials for a period of one (1) year from the date of first consumer purchase. This warranty may be enforced by the first consumer purchaser, provided that the product is utilized within the U.S.A. Cobra®will, without charge, repair or replace, at its option, defective GMRS radios, products or component parts upon delivery to the Cobra

Factory Service department, accompanied by proof of the date of first consumer purchase, such as a duplicated copy of a sales receipt. You must pay any initial shipping charges required to ship the product for warranty service, but the return charges will be at Cobra®’s expense, if the product is repaired or replaced under warranty. This warranty gives you specific legal rights, and you may also have other rights which may vary from state to state.

Exclusions: This limited warranty does not apply: 1) To any product damaged by accident;

2) In the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs; 3) If the serial number has been altered, defaced, or removed; 4) If the owner of the product resides outside the U.S.A.

All implied warranties, including warranties of merchantability and fitness for a particular purpose are limited in duration to the length of this warranty. Cobra®shall not be liable for any incidental, consequential or other damages; including, without limitation, damages resulting from loss of use or cost of installation. Some states do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations may not apply to you.

For products purchased outside the U.S.A., please contact your local dealer for warranty information.

Warranty

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

FCC Warnings: Replacement or substitution of transistors, regular diodes or other parts of a unique nature, with parts other than those recommended by Cobra®may cause a violation of the technical regulations of part 95 of the FCC Rules, or violation of type acceptance requirements of part 2 of the Rules.

Page 14

English

Order Form & Accessories

Customer Assistance

Name

Address (No P.O. Boxes)

City State/Province Zip Country

Telephone

Credit Card Number Type: ❒ Visa ❒ Mastercard ❒ Discover Exp. Date

Customer Signature

Item # U.S. Cost Each Qty Amount

U.S. Subtotal

(Tax if Applicable)

Shipping/Handling

Total

Optional Accessories

You can find accessories at your local Cobra

dealer,

or in the U.S.A. you can order directly from Cobra.

Ordering From U.S.

Call 773-889-3087 for pricing or visit www.cobra.com. For credit card orders, complete and return this order

form to fax number 773-622-2269. Or call 773-889-3087 (Press 1 from the main menu) 8:00 a.m. to 6:00 p.m. CT, Monday through Friday.

Make check or money order payable to: Cobra

Electronics, Attn: Accessories Dept.

6500 West Cortland Street, Chicago, IL 60707 USA To order online, please visit our website: www.cobra.com

The Cobra

line of quality products includes:

CB Radios microTALK

Radios Radar/Laser Detectors Safety Alert

Traffic

Warning Systems Accessories GPS (Global

Positioning System) Marine VHF Radios HighGear

Accessories

Amount Shipping/Handling*

$10.00 or less . . . . . $3.00

$10.01-$25.00 . . . . . $5.50

$25.01-$50.00 . . . . . $7.50

$50.01-$90.00 . . . . $10.50

$90.01-$130.00 . . . $13.50 $130.01-$200.00 . . $16.50

$200.01 plus . . . . . 10% of

purchase

Tax Table

Wisconsin add 5% Indiana, Michigan,

Ohio add 6% California add 7.25% Illinois add 8.75%

*For AK, HI and PR add additional $26.95 for FedEx Next Day or

$10.95 for FedEx 2nd Day. Excludes weekends and holidays shipments. Please allow 2-3 weeks for delivery in the U.S. Prices subject to change without notice.

•

Cobra PR4250WX Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual