Cobra microTALK FRS121C User manual

FRS121C
2-WAY RADIO MODEL
Nothing Comes Close To A Cobra™English
Owner’s Manual
Printed in China Part No. 480-065-P

2English
Making Life Easier & Safer
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 Canada or 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. [e-mail] (e-mail).
For Assistance Outside Canada, the U.S.A. or in French
Contact Your Local Dealer ©2003 Cobra®Electronics Corporation
6500 West Cortland Street
Chicago, Illinois 60707 USA
www.cobra.com
Belt Clip
Wrist Strap
Customer Assistance

Battery
Compartment
Battery
Door Latch
BeltClip
3English
Product Features
Introduction
On/Off
Power Button
Backlit LCD
Display
Channel Up/
Down Buttons
Speaker/Microphone
Call Button
Light/Max
Range Button
Antenna
Volume Up/
Down Button(s)
Mode/Lock
Button
Talk
Button
Wrist Strap
Connector

Industry Canada Notice: Operation is subject to the following two (2)
conditions: 1) this device may not cause interference, and 2) this device
must accept any interference, including interference that may cause
undesired operation of the device.
«IC» before the equipment certification number signifies that the Industry
Canada technical specifications were met. It does not guarantee
that the certified product will operate to the user’s satisfaction.
Important FCC Information
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.
4English
Product Features
Introduction
Features
• Two-Way Radio
With a range up to
three (3) kilometers
(2 miles).
• 14 Channels
• UHF FM Frequencies
• Backlit LCD Display
• Call Alert
• Key Lock Button
• “Roger Beep”
Selectable On/Off
confirmation tone.
• Battery/Power Saver
• 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.
Backlit LCD
Display
Receive (RX)/
Transmit (TX) Icon
Lock
Icon
Roger
Beep Icon
Battery
Low Icon
Main Channel
Numbers

Batteries •
To Install or Replace Batteries:
1. Remove belt clip by releasing belt clip latch and
sliding clip up.
2. Pull up on the Battery Door Latch to remove the
battery compartment cover.
3. Insert four (4) AAA batteries. (Always use high
quality alkaline batteries.) Position batteries
according to polarity markings.
4. Replace Battery Compartment cover and belt clip.
Contact your local Cobra®dealer or
Cobra®directly for optional battery pack
and desktop charger accessories.
Turning On Your microTALK®Radio •
To Turn On Your Radio:
1. Press and hold the Power button until you hear a
series of audible tones indicating 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 or Call buttons
are pressed.
Battery Low •
When battery power is low, the Battery Low
icon will blink. Your batteries should be replaced or
recharged, if using rechargeable batteries.
Battery/Power Saver •
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. This will not affect the
radio’s ability to receive incoming transmissions.
5English
Using Your Radio
Operation
On/Off Power
Battery Low
Insert Batteries
Pull Up Lock Tab
Remove Belt Clip

6English
Using Your Radio
Communicating with Another Person •
To Talk To Another Person:
1. Press and hold the Talk button.
2. With the microphone about five (5) centimeters
(2 inches) 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.
Channels •
To Select a Channel:
1. With the radio On, select any of the 14 channels by
pressing the Channel Up or Channel Down button.
Both radios must be tuned to the same
channel to communicate.
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. Press the Volume Up or Volume Down button.
A double beep sound is used to indicate the minimum
and maximum volume levels (1 through 8).
Operation
Talk Button
5 cm (2 inches)
From Mouth
Channel Select
Listening
Volume Select
Volume Level

7English
Using Your Radio
Operation
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 ringing
tone. You cannot send or receive transmissions during
the two (2) second call tone.
“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.
When turning On your microTALK®radio for the first
time, “Roger Beep” will be On.
To Turn “Roger Beep” On or Off:
1. Press and release the Mode/Lock button until the
“Roger Beep” icon flashes. 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/Lock button to enter the new
setting and return to Standby Mode.
b Do not press any buttons for 15 seconds 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.
Call Button
Roger Beep Icon
Roger Beep Off
Mode/Lock Button

8English
Using Your Radio
Operation
Display Illumination •
To Illuminate Your Display:
1. Press 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 for 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.
Light/Max Range
Light/Max Range

9English
Using Your Radio
Lock Function •
The Lock button locks the Channel,Mode and Power
buttons to prevent accidental operation.
To Use the Lock Function:
1. Press and hold the Mode/Lock button for
two (2) seconds to turn the Lock On or Off.
The Mode/Lock button has dual functions.
Press and release to set Roger Beep Confirmation
Tones. Press and hold to enter Lock Function.
A double beep sound is used to confirm your
Lock On or Off request. When in Lock Mode,
the Lock icon will be displayed.
microTALK®Range •
Your microTALK®radio has a range of up to three (3)
kilometers (2 miles). 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.
Dense foliage and hilly terrain will further reduce
the signal.
Remember, you can achieve maximum
range by using Maximum Range Extender.
See page 8 for details.
Lock Icon
Mode/Lock Button
Maximum Range
Reduced Range
Reduced Range
Operation

10 English
General Specifications
Nominal
Unit
Nominal
Unit
Operation
C. Transmitter
1. Power. . . . . . . . . . . . . . . . . . . . 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 3
6. Audio Distortion . . . . . . . . . . . . % 3
7. Hum Noise . . . . . . . . . . . . . . . . dB 30
8. Transient Frequency Behavior
a) TX On . . . . . . . . . . . . . . . . . mS 30
b) TX Off . . . . . . . . . . . . . . . . . mS 5
B. Receiver
1. Sensitivity
For 12 DB SINAD . . . . . . . . . . . dBm -122
For Call Signal Detection . . . . . dBm -122
2. Max. Audio Output
@10%THD. . . . . . . . . . . . . . . . mW 350
3. Max. S/N Ratio
@ 1mV RF Input . . . . . . . . . . . . dB 40
4. Squelch
a) Sensitivity . . . . . . . . . . . . . dB sinad 10
b) Attack Time . . . . . . . . . . . . . . mS 120
c) Closing Time . . . . . . . . . . . . . mS 200
5. Audio Frequency Response
@ 300 HZ . . . . . . . . . . . . . . . . . dB -3
@ 2500 HZ . . . . . . . . . . . . . . . . dB -10
6. Signal Displacement BW . . . . +/-KHz 6
7. Adjacent Channel Rejection . . . . dB 50
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
A. FRS Frequency
Allocation
A=Channel No. For
14 Channel FRS Models
B = Frequency in MHz
C = Power in Watts
AB C
1 462.5625 0.5
2 462.5875 0.5
3 462.6125 0.5
4 462.6375 0.5
5 462.6625 0.5
6 462.6875 0.5
7 462.7125 0.5
8 467.5625 0.5
9 467.5875 0.5
10 467.6125 0.5
11 467.6375 0.5
12 467.6625 0.5
13 467.6875 0.5
14 467.7125 0.5
The Cobra®line
of quality products
includes:
CB Radios,
microTALK®Radios,
Radar/Laser Detectors,
Safety Alert®Traffic Warning
Systems,
Accessories,
GPS (Global Positioning
System),
HighGear™Accessories