Cobra 148NWST Operating instructions

How to Use Your
Cobra 148 NW ST
Contents
Features..................................................................................................1
The CB Story.........................................................................................A1
FCC Regulations
FCC Warnings
Included Accessories
Controls & Indicators.......................................................................A2
Our Thanks to You.............................................................................A3
SoundTracker™
Customer Support
Installation
Location.............................................................................................2
Mounting and Connection.........................................................2
Antennas
CB Antenna.......................................................................................6
Marine Installation.........................................................................6
Ignition Noise Interference..........................................................7
Operating Your 148 NW ST
Turning On Your CB........................................................................8
Setting Channel Selector.............................................................9
To Receive..........................................................................................10
S-Meter...............................................................................................10
SoundTracker™System................................................................11
Activating SoundTracker™..........................................................12
NB,Off, (Noise Blanker/Limiter) Switch...................................13
Dimmer Switch................................................................................14
RF Gain Control................................................................................14
Setting Squelch...............................................................................16
To Transmit........................................................................................20
RF Meter.............................................................................................21
External Speaker.............................................................................22
PA (Public Address)........................................................................23
Home And Office Set-Up.............................................................25
Temporary Mobile Set-up............................................................26
HowYour CB Can Serve You..........................................................27
A Few Rules You Should Know..................................................27
Channel 9 Emergency Messages..............................................27
CB 10 Codes......................................................................................29
Frequency Ranges.............................................................................31
148 NW ST Specifications..............................................................32
Warranty Information.....................................................................33
Optional Accessories.......................................................................34
Order Form...........................................................................................36
If YouThinkYou Need Service...................................Back Cover
Features of ThisProduct
• 40CBRadioChannels
•80SSBChannels
• SoundTracker™System
• Heavy-DutyDynamic
Microphone
• Full4WattsAMRFPowerOutput
• 12Watts SSBRF Power Output
• InstantChannel 9
• FrontPanel4-PinMicrophone
Connector
• SwitchableNoiseBlanker
• AdjustableDynamikeBoost
• TactileControls
• SWRCalibration Meter
• RFGain
• 9FtMicCord
• IlluminatedFrontPanel
• DimmerControl
1
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK DO NOT REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN !!
148 NW ST manual 3.3 6/15/99 3:11 PM Page 1

InstallationInstallation
Location
32
Mounting and
Connection
Mounting and Connection
Hold the radio with the mounting bracket in
the exact desired location.If there is no inter-
ference,remove the bracket and use it as a
template to mark the location for the mount-
ing screws.
Location
Plan location of transceiver and microphone
bracket before starting the installation.
Select a location that is convenient for operation,
yet does not interfere withthe driver or passenger.
The transceiver is usually mounted to the under-
side of the dash with the microphone bracket
beside it.
Note
Thetransceiverisheldinthe
universalmountingbracketby
fourthumbscrewswhichallow
foradjustmentataconvenient
angle.
Thebracketincludestwoself-
tappingscrewsandstarwash-
ers.Themountingmustbe
mechanicallystrong,conve-
nientlylocated.
continued
Drill the holes and secure the bracket.
2
1
Connect the antenna cable plug to the recep-
tacle marked“ANT” on the back of the unit.
3
148 NW ST manual 3.3 6/15/99 3:11 PM Page 2

InstallationInstallation
54
Note
Connectingtoanaccessoryfuse
preventstheunitfrombeingleft
onaccidentally,andalsoper-
mitsoperatingtheunitwithout
runningtheengine.
Note
Inpositivegroundvehiclesthe
redwiregoestothechassisand
theblackwireisconnectedto
theignitionswitch.
Note
Beforeinstalling theCB radio,
visuallycheck thevehicle’s
batteryconnection todeter-
mine which terminal, positive
ornegative,is grounded(pos-
itiveis thelarger ofthe two)
to theengine block(or chas-
sis).A negatively grounded
vehiclehas itsnegative lead
groundedto thechassis.
In a negative grounded vehicle, connect the
red lead of the DC power cord to an accessory
12 volt fuse.
Connect the black lead to the negative side of
the vehicle.This is usually the chassis.Any con-
venient location with a good electrical contact
(remove paint) may be used.
4
5
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
Mount the microphone
bracket on either side of
the unit (driver’s left)
using two screws sup-
plied.Bracket should be
placed under the dash
so microphone is readily
accessible.
6
7
Attach the 4-pin microphone cable to recepta-
cle on front of unit and Install unit in bracket
securely.
8
148 NW ST manual 3.3 6/15/99 3:12 PM Page 4

Ignition Noise InterferenceAntennas
Use of a mobile receiver at low signal levels is
normally limited by the presence of electrical
noise.The primary source of noise in automobiles
is from the alternator and ignition system.
Typically, when signal level is adequate, the back-
ground noise does not present a serious problem.
Also,when extremely low level signals are being
received, the transceiver may be operated with
the vehicle’s engine turned off.The unit requires
very little current and therefore will not signifi-
cantly discharge the vehicle’s battery.
Even though the Cobra 148 NW ST has an auto-
matic noise limiter, in some installations ignition
interference may be high enough to make good
communications impossible.Many possibilities
exist and variations between vehicles require
different solutions.Consult your COBRA dealer or
a 2-way radio technician for help in locating the
source of a severe noise.
CB Antenna
Since the maximum allowable power output of
the transmitter is limited by the FCC,the antenna
is critical in affecting transmission distance.Only
a properly matched antenna system will allow
maximum power output. Cobra loaded type
antenna models are highly recommended for
most installations.Consult your Cobra dealer for
further details,or call 773.889.3087 and speak to
a Cobra representative.
Marine Installation
The transceiver will not operate at maximum effi-
ciency in a boat without a ground plate,(unless it
has a steel hull). Before attempting installation ,
consult your dealer for information regarding an
adequate grounding system and prevention of
electrolysis between fittings in the hull and water.
CB Antenna
7
Note
Foroptimumperformancein
passengercarstheidealanten-
nalocationisonthecenterof
theroof.Secondchoiceisonthe
centerofthetrunk.
Note
Becausemanynewertrucks
featurefiberglassdoorskins,the
outsidemirrormustbeground-
edtothechassisviaaground
strapiftheantennaismounted
onmirrorbracket.
Note
3-wayCombinationAntennas
arealsoavailable whichallow
operationofallthreebands
(AM-FM & CB),using a single
antenna.However,thistypeof
antennausuallyresultsinless
thannormaltransmitand
receiverangewhencompared
toastandard-type“Single
Band”CBantenna.Call773-
889-3087forfurtherinforma-
tion.
6
1A standard antenna connector is provided
on the transceiver for easy connection.
148 NW ST manual 3.3 6/15/99 3:12 PM Page 6

The CB/PA button should be in the
CB position.
Operation
9
Operation
Turning On Setting Channel
Selector
8
Turning On
Make sure the power cord,antenna and micro-
phone are connected to their proper connectors
before starting.
Setting Channel Selector
2
1
Rotate the On/Off Volume knob clockwiseto
a normal listening level.
Select one of forty channels and adjust
volume.The selected channel is indicated by
the LED readout directly above the channel
selector knob
1
148 NW ST manual 3.3 6/15/99 3:12 PM Page 8

Rotate the On/OffVolume knob clockwise
the green RT/TX LED will be illuminated.
Operation
11
Operation
10
S-Meter
To Receive
1
To Receive
The S/RF-SWR-CAL switch must be in the
S/RF position to read the meter.
1
S-Meter
Swings proportionately to strength of incoming
signal when receiving.
The SoundTrackerTM System
While previous systems only “blanket out”or limit
noise in higher sound frequencies,the revolution-
ary new SoundTrackerTM System actually reduces
noise while leaving the signal intact in the recep-
tion mode. In the transmission mode, it actually
strengthens the signal,providing you with a
significant reduction in noise on reception
and transmission.
Sound clarity is measured by the ratio
of the signal level to the noise level.
The higher the signal-to-noise ratio,
the better the sound.
How SoundTrackerTM Works
OnReception-“Cutsnoisecomingin”
With a normal CB,distant signals fall below
the squelch level and are unintelligible.With a
SoundTrackerTM CB,the noise level is cut up to
90%,which increases the signal-to-noise ratio
and dramatically improves signal clarity.This also
allows you to significantly reduce the squelch
level,which greatly expands your listening range.
OnTransmission-“Strengthenssignalsgoingout”
A SoundTrackerTM CB strengthens the transmit
signal by more effectively using the available RF
power output of the CB.The result is improved
transmission signal clarity and an expanded
transmission range.
Note
SoundTracker™givesyou
clearer,cleaner receptionto
improveCBcommunications
whileontheair.
148 NW ST manual 3.3 6/15/99 3:12 PM Page 10

OperationOperation
1312
Activating
SoundTracker
™
Pushandrelease the ST button.Red LED
is illuminated when SoundTracker™ is
turned on.
1
Activating SoundTracker™
NB-ANL/ANL/
OFF (Noise
Blanker/
Automatic
Noise Limiter)
Switch
Hi/Low/ Tone
Control
Hi/Low Tone Control
Note
TheRF Noise Blankerisvery
effective in reducing repetitive
noises suchas ignition
interference.
TheAutomaticNoiseLimiter
helpsreducenoisecreatedby
thevehicle’selectronics.
NB-ANL/ANL/OFF (Noise
Blanker/Automatic Noise Limiter) Switch
to Whenswitched,this buttonisused toshape the
audioresponsetotheoperator’spreference.
1
Whenswitched to ANL the Automatic Noise
Limiter is activated.This helps reduce noise
created by the vehicle’s electronics.
Whenswitched to NB/ANL position the RF
Noise Blanker is also activated,providing
increased noise filtration.
When switched to OFF position all noise
filtration will be turned off.
1
148 NW ST manual 3.3 6/15/99 3:12 PM Page 12

OperationOperation
1514
RF Gain Control
RF Gain Control
The RF Gain is used to optimize reception in
strong or weak signal areas.
Dimmer Control
Dimmer Control
Controls the brightness of the front panel,signal
strength meter and channel display
Note
TheRFGainisusedtooptimize
receptioninweaksignalareas.
Rotate the RF Gain knob counterclockwise
to reduce gain in strong signal areas.In weak
signal areas turn clockwise to increase gain.
For maximum brightness turn clockwise;
counterclockwise for minimum illumination
1
Select mode of operation from USB to AM
to LSB
Voice Lock
USB/AM/LSB Switch
1
to Rotate to clarify receiver’s frequencies
above and below assigned frequencies.
Primarily used to tune SSB signals as well
as optimizing AM signals.
1
148 NW ST manual 3.3 6/15/99 3:12 PM Page 14

Full clockwise rotation closes the gate
allowing only very strong signals to enter.
To achieve the Desired Squelch Setting (DSS),
turn the Squelch control counterclockwise
until you hear noise. Now turn the control
clockwise just until the noise stops. This is the
DSS setting.
Setting Squelch
Squelch is the“control gate”for incoming signals.
1716
Operation Operation
1
3
Gate setto Desired
Squelch Setting(DSS)
Gateclosed
Setting Squelch
Full counterclockwise rotation opens the
“gate”allowing all signals in.
2
Gate open
148 NW ST manual 3.3 6/15/99 3:12 PM Page 16

While holding mic
button adjust the
SWR CAL knob so the
meter needle swings
to the CAL ▼mark on
the meter (located on the right). If optimum
signal is not achieved (less than 3) a slight
adjustment to the length of the antenna must
be made. Recalibrate.
Repeat the same steps on Channel 1 and 40.
Continue holding the mic button and turn the
SWR CAL knob to the SWR position for SWR
measurement.
OperationOperation
Calibrate For
SWR (Standing
Wave Ratio)
1918
Note
Calibrationmustbemadeinan
openarea(never ina garage).
Vehicledoorsmustbeclosed.No
oneshouldbestandingnearthe
antenna.(See your antenna
directionsformorecomplete
information).
Note
Thereadingwillbeslightlyhigh-
eronChannels1and40com-
paredtoChannel20.
Note
WhenswitchedtoSWRposition
themeterneedleshouldideally
beasfartotheleftaspossible.
Anythingover3isnotaccept-
able.Aslightantennaheight
adjustment(higherorlower)
mayberequired.Repeat recali-
brationstep.
Note
SWRcalibrationisdonetoprop-
erlyadjustthelengthofthe
antennaandtomonitorthe
qualityofthecoaxialcableand
allRFconnections.
Thiscalibrationiscriticalin
ordertoachieve optimumper-
formance.
Pushandhold mic button.
Switch to the CAL position.
2
1
3
Calibrate for SWR (Standing Wave Ratio)
Select channel 20.
4
5
6
148 NW ST manual 3.3 6/15/99 3:12 PM Page 18

Setting Dynamike
This controls the microphone sensitivity
(outgoing audio level).
ToTransmit
21
To Transmit
Setting
Dynamike
20
Transmit
RF Meter
Caution!
Besuretheantennaisproperly
connectedtotheradiobefore
transmitting.Prolongedtrans-
mitting without an antenna,or
apoorlymatched antenna,
couldcausedamagetothe
transmitter.
BesuretoreadtheF.C.C.Rules
andRegulationsincludedwith
thisunitbeforetransmitting.
Operation Operation
1
Select desired channel.
1
1
Initially,set fully clockwise so that maxi-
mum voice volume is available.Dynamike
may have to be reduced in some conditions.
Transmit
Pressandhold mic button to transmit.
Transmitter is now activated.When transmit-
ting,hold the microphone two inches from
your mouth and speak in a clear,normal voice.
Release to receive.
1
The S/RF-SWR-CAL switch must be in the
S/RF position.
RF Meter
This meter swings proportionately to the RF
output (outgoing signal) while transmitting.
148 NW ST manual 3.3 6/15/99 3:12 PM Page 20

OperationOperation
23
22
External Speaker
External Speaker
The external speaker jack is used for remote
receiver monitoring.
Note
Theexternalspeakershould
have8-ohmimpedanceandbe
ratedtohandleatleast4.0
watts.Whentheexternalspeak-
er is plugged in,the internal
speakerisautomaticallydiscon-
nected.
Note
Cobraexternalspeakersare
ratedat10watts.See
Accessoriespage39.
Connect an external speaker to the external
speaker jack on the rear panel.
1
PA (Public
Address)
PA (Public Address)
Connect an external PA speaker to the PA jack
on the rear panel.
Set CB/PAswitchtoPAposition.
Note
Speakershouldhave8-ohm
impedanceandberatedto
handleatleast4.0watts.
Note
Thespeakershouldbedirected
awayfromthemicrophoneto
preventacousticfeedback.
Note
Activityon the CB channel will
beheardthroughthePAspeak-
er.Adjustvolumecontroltoa
normallisteninglevel.
1
2
148 NW ST manual 3.3 6/15/99 3:12 PM Page 22

OperationOperation
2524
Pushandhold microphone button and speak
in a normal voice.Your voice will now transmit
on the PA speaker.
Adjust PA speaker volume with the
Dynamike control.
3
4
Base Station
Operation
(From 120V AC
House Current)
Base Station Operation
(From 120V AC House Current)
To operate your transceiver from home or office
you will need a 13.8 volt DC Power Pack rated at a
minimum of 2 amps,and a properly installed base
station antenna.
Warning!
Donotattempttooperatethis
transceiverbyconnectingit
directlyto120vac.
Note
Forfurther informationcall
CobraCustomerService
1.773.889.3087.
1Simply connect the red (+) and black (-)
leads of the transceiver to the corresponding
terminals of the power pack.
148 NW ST manual 3.3 6/15/99 3:12 PM Page 24

27
Temporary Mobile Set-Up
26
Temporary
Mobile Set-Up
Temporary Mobile Operation
For temporary mobile operation you may want to
purchase an optional cigarette lighter adapter
from your COBRA dealer.This adapter and a mag-
netic mount antenna allow you to quickly“install”
your transceiver for temporary use.
Connect properly installed and matched base
station antenna.
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
2
3
How Your CB Can Serve You
1. Set to channel 9 for emergencies
Be sure antenna is properly connected.
2. CB Distress Data
When transmitting an emergency, you should
request a “REACT BASE”and provide the CB
distress data (called CLIP):
Call Sign Identifyyourself.
Location Beexact.
Injuries Number.Type.Trapped?
Problem Givedetailsandhelpneeded.
TransmitCLIP repeatedlyso anymonitor can assist.
Channel 9
Emergency
Messages
Note
Ifnoresponseonchannel9,
trychannels19or14.
• Warn of traffic problems
• Provide weather and road data
• Provide help in event of an emergency
• Provide direct contact with home or office
• Assist police by reporting erratic drivers
• Get“local information”to find destination
• Communicate with family and friends
•Suggest spots to eat and sleep
•Keep you alert while driving
A Few Rules You Should Know
A. Conversations cannot lastmore than 5 minutes
with another station. A one minute break is
required to let others use the channel.
B. You cannot blast others off the air by use of
illegally amplified transmitters or illegally
high antennas.
C. You cannot use CB to promote illegal activities.
D. Profanity is not allowed.
E. You may not transmit music with a CB.
F. Selling of merchandise and/or services is
prohibited.
A Few Rules
You Should
Know
148 NW ST manual 3.3 6/15/99 3:12 PM Page 26

How Your CB Can Serve You How Your CB Can Serve You
29
28
The FCC gives these examples of permitted and
prohibited messages for channel 9. These are
only guidelines and not all-inclusive:
Permitted Example Message
Yes “Tornado sighted six miles north
of town.”
No “Post number 10.
No tornado sighted.”
Yes “Out of gas on I-95 at mile
marker 211.”
No “Out of gas in my driveway.”
Yes “Four car accident on I-94 at
Exit 11. Send police and
ambulance.”
No “Traffic moving smoothly on I-94.”
Yes “Weather Bureau has issued
thunderstorm warning.
Bring sailboat into port.”
No “Attention motorists.
Weather Bureau advises snow
tomorrow will accumulate
4 to 6 inches.”
Yes “Fire in building at 539 Main,
Evanston.”
No “Halloween patrol number 3.
All quiet.”
CB 10-Codes
Citizen Bands have adopted the “10-CODES”for
standard questions and answers. These codes
provide quick and easy communication,especially
in noisy areas. Following are some of the more
common codes and meanings:
Code Meaning
10-1 Receiving poorly
10-2 Receiving well
10-3 Stop transmitting
10-4 OK,message received
10-5 Relay message
10-6 Busy, stand by
10-7 Out of service,leaving
10-8 In service,subject to call
10-9 Repeat message
10-10 Transmission completed standing by
10-11 Talking too rapidly
10-12 Visitors present
10-13 Advise weather/roads
10-16 Make pick up at
10-17 Urgent business
10-18 Anything for us?
10-19 Return to base
10-20 My location is
10-21 Call by phone
10-22 Report in person to
10-23 Stand by
10-24 Completed last assignment
10-25 Can you contact
10-26 Disregard last info
10-27 Moving to channel
10-28 Identify your station
CB 10-Codes
148 NW ST manual 3.3 6/15/99 3:12 PM Page 28

Frequency RangesHow Your CB Can Serve You
3130
Code Meaning
10-29 Time is up for contact
10-30 Does not conform to FCC rules
10-33 Emergency traffic
10-34 Trouble at this station
10-35 Confidential information
10-36 Correct time is
10-37 Wrecker needed at
10-38 Ambulance needed
10-39 Message delivered
10-41 Turn to channel
10-42 Traffic accident at
10-43 Traffic tie up at
10-44 Have a message for
10-45 All units within range please report
10-50 Break channel
10-60 What is next message number?
10-62 Unable to copy.Use phone
10-63 Net directed to
10-64 Net clear
10-65 Awaiting your next message/assignment
10-67 All units comply
10-70 Fire at
10-71 Proceed, transmission in sequence
10-77 Negative contact
10-81 Reserve hotel room for
10-82 Reserve room for
10-85 My address is
10-91 Talk closer to mic
10-93 Check my frequency on this channel
10-94 Give me a long count
10-99 Mission completed,all units secure
10-200 Police needed at
The COBRA 148 NW ST transceiver represents
one of the most advanced AM two-way radios
used as a Class D station in the Citizens Radio
Service.This unit features advanced Phase Lock
Loop (PLL) circuitry providing complete cover-
age of all 40 CB channels.
1 26.965 21 27.215
2 26.975 22 27.225
3 26.985 23 27.255
4 27.005 24 27.235
5 27.015 25 27.245
6 27.025 26 27.265
7 27.035 27 27.275
8 27.055 28 27.285
9 27.065 29 27.295
10 27.075 30 27.305
11 27.085 31 27.315
12 27.105 32 27.325
13 27.115 33 27.335
14 27.125 34 27.345
15 27.135 35 27.355
16 27.155 36 27.365
17 27.165 37 27.375
18 27.175 38 27.385
19 27.185 39 27.395
20 27.205 40 27.405
Channel Channel
CB Freq. CB Freq.
Channel In MHz Channel In MHz
148 NW ST manual 3.3 6/15/99 3:12 PM Page 30

Limited One Year Warranty148 NW ST Specifications
3332
GENERAL
CHANNELS......................................................................40 AM,40LSB,40 USB
FREQUENCY RANGE..................................................26.965TO27.405MHZ
FREQUENCYCONTROL............................................PHASELOCKLOOP(PPL)SYNTHESIZER
FREQUENCYTOLERANCE........................................0.005%
FREQUENCYSTABILITY............................................0.001%
OPERATINGTEMPERATURERANGE....................-30° CTO +50° C
MICROPHONE..............................................................PLUG-INDYNAMICWITHPUSH-TO-TALK SWITCH
INPUT VOLTAGE............................................................13.8VDC NOM.15.9VMAX.,11.7VMIN.
(POSITIVE OR NEGATIVE GROUND)
CURRENT DRAIN..........................................................TRANSMIT:AM FULL MOD.,2.2A.SSB 12
WATTS PEP OUTPUT,2A.
RECEIVE:SQUELCHED,0.25A;MAX.AUDIO
OUTPUT,0.6A.
SIZE....................................................................................2-3/8”H X 7-7/8”W X9-1/4”D
WEIGHT............................................................................5LBS.
ANTENNACONNECTOR..........................................UHF;SO-239
COLOR LIGHTEMITTINGDIODE
METER..............................................................................ILLUMINATED;INDICATESRELATIVEPOWER
OUTPUT, RECEIVEDSIGNALSTRENGTHANDVSWR
TRANSMITTER
POWEROUTPUT..........................................................AM 4WATTS,SSB 12WATTS,PEP
MODULATION..............................................................HIGH-ANDLOW-LEVELCLASSB,AMPLITUDE
MODULATION
INTERMODULATIONDISTORTION......................SSB:3RD ORDER,MORETHAN-25dB
5TH ORDER,MORETHAN -35dB
SSBCARRIERSUPPRESSION....................................55dB
UNWANTEDSIDEBAND............................................50 dB
FREQUENCY RESPONSE............................................AMANDSSB;300TO2500HZ
OUTPUTIMPEDANCE................................................50 OHMS,UNBALANCED
OUTPUTINDICATORS................................................METER SHOWSRELATIVE RF OUTPUT POWER
ANDSWR.TRANSMITLED GLOWSRED
WHENTRANSMITTER ISINOPERATION.
RECEIVER
SENSITIVITY....................................................................SSB:0.25 µV FOR 10 dB(S+N)/N AT
GREATERTHAN 1/2-WATT OFAUDIOOUTPUT
AM:0.5 µV FOR 10 dB (S+N) /NAT
GREATERTHAN 1/2-WATT OFAUDIOOUTPUT
SELECTIVITY..................................................................AM:7.8KHZ,50dB@9KHZ
SSB:6dB@ 1.1 KHZ,60dB @ 2.3 KHZ
IMAGEREJECTION......................................................MORETHAN 65 dB
ADJACENT-CHANNELREJECTION........................60 dBAM & 70 dBSSB
IFFREQUENCIES ..........................................................AM:7.8MHZ 1ST IF,455 KHZ 2 ND IF
SSB:8.7MHZ
AM& SSBRFGAIN CONTROL ..............................40 dBADJUSTABLE FOR OPTIMUM SIGNAL
RECEPTION
AUTOMATICGAINCONTROL (AGC)....................LESS THAN 10 dBCHANGEINAUDIOOUTPUT
FOR INPUTS FROM 10TO 100,000 MICROVOLTS
NOISE BLANKER..........................................................RFTYPE, EFFECTIVEON AM AND SSB
ANL....................................................................................SWITCHABLE
SQUELCH........................................................................ADJUSTABLE;THRESHOLDLESSTHAN0.25µV
VOICE LOCK RANGE..................................................+/- 1.5 KHZ
AUDIOOUTPUTPOWER..........................................4WATTS INTO 8 OHMS
FREQUENCY RESPONSE............................................300TO2500HZ
DISTORTION..................................................................LESSTHAN0 % @ 0 WATTS @ 0000HZ??
BUILT-INSPEAKER ......................................................8OHMS,5WATTS
EXTERNAL SPEAKER (NOT SUPPLIED)................8 OHMS;DISABLESINTERNAL SPEAKER WHEN
CONNECTED
PASYSTEM
POWEROUTPUT..........................................................4 WATTS INTOEXTERNALSPEAKER
EXTERNAL SPEAKER FOR PA ..................................8OHM,4 WATTS MIN.
(NOT SUPPLIED)
(SPECIFICATIONSSUBJECTTOCHANGEWITHOUTNOTICE)
COBRA ELECTRONICS CORPORATION warrants that its
COBRA CBradios,and the component parts thereof,will be
free of defects in workmanshipand materialsfor period of
two (2) year from date of first consumer purchase.This war-
ranty may be enforced by the first consumer purchaser,pro-
vided that the productis utilized within theU.S.A.
COBRA will,without charge,repair or replace,atitsoption,
defective CB radios,products or component parts upon
delivery to the COBRA factory Service Department,accom-
panied byproof of the date offirst consumer purchase,such
as aduplicated copy of a sales receipt.
You must pay any initial shipping charges requiredto ship
the product for warranty service,but the return charges will
be at Cobra’s expense,if the product is repairedor replaced
under warranty.
Exclusions:This limited warranty doesnotapply;1.) toany
product damaged byaccident;2.) in the event of misuse or
abuse of the product or as a resultof unauthorized alter-
ations orrepairs;3.) if the serial number has been altered,
defaced orremoved;4.) if the owner of the product resides
outside the U.S.A.
Allimplied warranties,includingwarrantiesof merchantabili-
ty and fitness for a particular purpose are limited in duration
to the length ofthis 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.
Somestatesdo not allow limitations onhow long animplied
warranty lasts and / or do not allow the exclusion or limita-
tion of incidental or consequential damages,so the above
limitations may not apply to you.
All implied warranties,includingwarrantiesofmer-
chantability and fitness for a particular purpose are lim-
ited in duration to the length of this warranty.COBRA
shallnot be liable for any incidental,consequential or
other damages;including,withoutlimitation,damages
resulting from loss of use orcostof installation.
Somestates do not allow limitations on how long an
implied warranty lasts and /or do not allow the exclu-
sion or limitation of incidental or consequential dam-
ages,so the above limitations may not applyto you.
CobraElectronics
Corporation
6500WestCortlandStreet
Chicago,Illinois60707
148 NW ST manual 3.3 6/15/99 3:12 PM Page 32

You Can Find These Fine Accessories At Your Local
Cobra CB Dealer
If you wish,you can order directly from Cobra.
Order by phone
Call 1.773.889.3087
(Press 1 from the main menu) 8 a.m.-8 p.m. M-F CST.
Order by mail or fax
Please fill out order form on next page,and mail/fax directly
to Cobra.
Optional AccessoriesOptional Accessories
3534
DynamicExternalSpeaker
Forinvehicle use
CS100 $14.95
NoiseCanceling External
Speaker
Forinvehicle use
CS300 $19.95
Dynamic Noise Canceling
With Talk BackExternal
Speaker
Forinvehicle use
CS500 $24.95
PowerMicrophone
Forinvehicle use
CA75 $21.95
NoiseCanceling/Power
Microphone
Forinvehicle use
CA77 $24.95
Echo/NoiseCanceling
Microphone
Forinvehicle use
CA 79 $59.95
ReplacementDC PowerCord
Forinvehicle use
420-071-9-001 $7.50
ReplacementMounting
Bracket
Forinvehicle use
250-044-N-001 $4.50
ReplacementThumbScrews
Forinvehicle use
634-088-9-001 $0.60
ReplacementMicrophone
Bracket
Forinvehicle use
741-080-9-001 $0.45
28”FullRangeCenter Load,
MagneticMountAntenna
Forinvehicleuse
AT35 $19.95
25”Glass Mount Antenna
Forinvehicle use
AT55 $27.95
39”FullRangeBase Load,
MagneticMountAntenna
Forinvehicle use
AT70 $24.95
44”FullRange,CenterLoad,
DualBandCB/WX Antenna
Allowsgreatertransmission
rangewhilein a moving vehicle.
ATW-400 $27.95
ReplacementDynamic
Microphone
Forinvehicle use
CA73 $12.95
148 NW ST manual 3.3 6/15/99 3:12 PM Page 34

Accessory Order Form
36
TaxTable
Illinois residents add 7%
Cook Co.residents add .75% (7.75% total)
Chicago residents add 1% (8.75% total)
Indiana residents add 5%
For credit card orders fill out order form
and fax to: 1.773.622.2269
or call 1.773.889.3087
(Press 1 from the main menu)
8:00 am - 8:00 pm,M-F,CST.
Make check or money order (no stamps)
payable to:
Cobra Accessories Dept.
6500WestCortland St.Chicago,IL60707
Prices subject to change without notice.
Please print clearly
Name
Address (No P.O.Box)
City State
Zip
Telephone ( )
Credit Card No. Exp.Date
Customer Signature
Circle One: Visa MasterCard Discover
Allow 4to6 weeksfordelivery.Offer valid in Continental U.S.only.
Subtotal
(Tax if applicable)
Shipping/handling
Total
Item # Description Cost Ea. Qty. Amount
420-071-9-001 Replacement DC PowerCord$7.50
250-044-N-001 ReplacementMounting Bracket $4.50
634-088-9-001 Replacement Thumb Screws $0.60
741-080-9-001 Replacement Microphone Bracket $0.45
AT 35 28”Full Range Center Load,
Magnetic Mount Antenna $19.95
AT 55 25”Glass Mount Antenna $27.95
AT 70 39”Full Range Base Load,
Magnetic Mount Antenna $24.95
ATW 400 44”Full Range,Center Load,
Dual Band CB/WX Antenna $27.95
CA 73
Replacement Dynamic Microphone $12.95
CA 75 Power Microphone $21.95
CA 77
Noise Canceling/Power Microphone $24.95
CA79 Echo/Noise Canceling Microphone $59.95
CS 100 Dynamic External Speaker $14.95
CS 300 Noise Canceling External Speaker $19.95
CS 500 Dynamic Noise Canceling
With Talk Back External Speaker $24.95
Michigan residents add 4 %
Ohio residents add 6%
Wisconsin residents add 5%
Shipping& Handling
Amount of Shipping/
Order Handling
$25.00 and under $4.75 minimum
$25.01-$40.00 $6.95
$40.01-$80.00 $9.00
$80.01-$120.00 $10.00
$120.01-$160.00 $11.50
$160.01 and up $14.25
For AK,HI and PR please add
anadditional$15.00forUPS
shipments.
148 NW ST manual 3.3 6/15/99 3:12 PM Page 36

148 NW ST
Cobra Electronics Corporation
6500 West Cortland Street
Chicago, IL60707
Cobra Electronics Corp.© 1999
Printed in China
Part No. 480-301-P-001
CB Radio
“Ingenious Products forEasier Communication.”
Operating Instructions
for your Cobra 148 NW ST
Fortechnicalassistance,pleasecallourAutomatedHelpDeskwhichcanassist
youbyansweringthemostfrequentlyaskedquestionsaboutCobraproducts.
[phone]
24hoursa day,7days a week.
AConsumer Service Representative can bereached through thissame number
8:00 am - 8:00 pm,Monday through Friday, CST.
Technicalassistance is also availableon-line intheFrequentlyAsked Questions (FAQ)section at
www.cobraelec.comorby e-mail to [email protected]
If youthink youneed servicecall1.773.889.3087
“Ifyourproductshould requirefactory service please call Cobra first before sending your unit in.
Thiswillensure the fastest turn-around timeonyourrepair.”
You may be asked to send your unit to the Cobra factory. It will be necessary to
furnish the following in order 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 or 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 unit. Include a typed or
clearly print name and address of where the unit is to be returned.
4. Pack unit 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 W. Cortland St., Chicago,IL
60707.
6. If the unit is in warranty, upon receipt of your unit it will either be repaired
or exchanged depending on the model. Please allow approximately 3 to 4
weeks before contacting us for status. If the unit 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 1.773.889.3087 for assistance.
IfYouThink You Need Service
148 NW ST manual 3.3 6/15/99 3:12 PM Page 37