Cobra 29 WX NW ST User Manual
29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 1
How to Use Your
Contents
Features..................................................................................................1
The CB Story.........................................................................................A1
FCC Regulations
FCCWarnings
Included Accessories
Controls & Indicators.......................................................................A2
Our Thanks toYou.............................................................................A3
SoundTracker
Customer Support
Installation
Location.............................................................................................2
Mounting and Connection.........................................................2
Antennas
CB Antenna.......................................................................................6
Marine Installation.........................................................................6
Ignition Noise Interference ..........................................................7
Operating Your 29 WX NW ST
Turning On Your CB........................................................................8
Setting Channel Selector.............................................................9
Calibrate For SWR (Standing Wave Ratio)..............................10
To Receive..........................................................................................12
Selecting a Channel.......................................................................13
S-Meter...............................................................................................13
SoundTracker™System................................................................14
Activating SoundTracker™..........................................................15
NB-ANL/ANL/Off (Noise Blanker/Automatic.........................16
Noise Limiter Switch)
CB/WX Switch...................................................................................17
RF Gain Control................................................................................17
Dimmer Switch................................................................................18
Setting Squelch...............................................................................18
ToTransmit........................................................................................20
Setting Dynamike...........................................................................20
Transmit..............................................................................................21
RF Meter.............................................................................................22
External Speaker.............................................................................23
PA (Public Address)........................................................................24
Weather Channels..........................................................................26
Home And Office Set-Up.............................................................28
Temporary Mobile Set-Up...........................................................29
HowYour CB Can ServeYou..........................................................30
A Few Rules You Should Know..................................................30
Channel 9 Emergency Messages..............................................30
Weather Channel Messages.......................................................31
CB 10 Codes......................................................................................32
Frequency Ranges.............................................................................34
29 WX NW ST Specifications ........................................................35
Warranty Information.....................................................................36
Optional Accessories.................................................................37-38
Order Form...........................................................................................39
IfYou Think You Need Service...................................Back Cover
™
Cobra 29 WX NW ST
Features of This Product
• 7Weather Channels
• EmergencyWeather Alert
• 40 CB Radio Channels
• SoundTracker™System
• Heavy-Duty Dynamic
Microphone
• Full 4 Watts AM RF Power Ou t p u t
• SWR Calibration Meter
• Instant Channel 19 and 9
• Front Panel 4-Pin Microphone
Connector
• Switchable Automatic Noise
Limiter & Noise Blanker
• Adjustable Dynamike Boost
• Tactile Controls
• 9 Ft Mic Cord
• Illuminated Front Panel
• Dimmer Control
• RF Gain
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK DO NOT REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE
P E R S O N N E L
!
!
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29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 2
InstallationInstallation
Location
Mounting and
Connection
Note
The transceiver is held in the
universal mounting bracket by
two thumbscrews which allow
for adjustment at a convenient
angle.
The bracket includes two selftapping screws and star washers.The mounting must be
mechanically strong,conveniently located.
Location
Plan location of transceiver and microphone
bracket before starting the installation.
Select a location that is convenient for operation,
yet does not inte rfe re with the dri ver or passenger.
The transceiver is usually mounted to the underside of the dash with the microphone bracket
beside it.
Mounting and Connection
1
Hold the radio with the mounting bracket in
the exact desired location.If there is no interference,remove the bracket and use it as a
template to mark the location for the mounting screws.
3
Connect the antenna cable plug to the receptacle marked “ANT” on the back of the unit.
2
Drill the holes and secure the bracket.
continued
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Note
Before installing the CB radio,
visually check the vehicle’s
battery connection to determine which terminal, positive
or negative,is grounded (positive is the larger of the two)
to the engine block (or chassis).A negatively grounded
vehicle has its negative lead
grounded to the chassis.
Note
Connecting to an accessory fuse
prevents the unit from being left
on accidentally,and also permits operating the unit without
running the engine.
Note
In positive ground vehicles the
red wire goes to the chassis and
the black wire is connected to
the ignition switch.
Note
When connected to an accessory fuse,unit will self test the
emergency weather alert automatically when ignition is
turned on.Turns itself on & off.
4
In a negative grounded vehicle,connect the
red lead of the DC power cord to an accessory
12 volt fuse.
5
Connect the black lead to the negative side of
the vehicle.This is usually the chassis.Any convenient location with a good electrical contact
(remove paint) may be used.
6
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
7
Mount the microphone
bracket on either side of
the unit (driver’s left)
using two screws supplied.Bracket should be
placed under the dash
so microphone is readily
accessible.
8
Attach the 4-pin microphone cable to receptacle on front of unit and Install unit in bracket
securely.
InstallationInstallation
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Ignition Noise InterferenceAntennas
CB Antenna
Note
For optimum performance in
passenger cars the ideal antenna location is on the center of
the roof.Second choice is on the
center of the trunk.
Note
Because many newer trucks
feature fiberglass door skins,the
outside mirror must be grounded to the chassis via a ground
strap,if the antenna is mounted
on the mirror bracket.
Note
3-way Combination Antennas
are also available which allow
operation of all three bands
(AM-FM & CB),using a single
antenna.However,this type of
antenna usually results in less
than normal transmit and
receive range when compared
to a standard-type“Single
Band”CB antenna.Call 773889-3087 for further information.
CB Antenna
Si n ce the maximum allowable power output of
the tra n s m i t ter is limited by the FCC ,the ante n n a
is cri t i cal in affe cting transmission distance.Only a
p ro pe rly matched antenna sys tem will allow maximum power output.Co b ra loaded ty pe ante n n a
m odels are highly re commended for most install at i o n s.For models with Weather Fe a t u re (W X ) , a
Dual Band (Ce n ter Lo a d / Base Load) antenna is
re co m m e n d e d.Consult your Co b ra dealer for fur-
ther details,or call 773.889.3087 and speak to a
Co b ra re p re s e nt at i ve.
1
A standard antenna connector is provided
on the transceiver for easy connection.
Marine Installation
The transceiver will not operate at maximum efficiency 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.
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 background 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 significantly discharge the vehicle’s battery.
Even though the Cobra 29 WX NW ST has an
automatic 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.
6
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29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 8
Operation
Turning On Setting Channel
Turning On
Make sure the power cord,antenna and microphone are connected to their proper connectors
before starting.
1
The CB/PA button should be in the
CB position.
Setting Channel Selector
1
Select one of forty channels and adjust
volume.The selected channel is indicated by
the LED readout directly above the channel
selector knob
Operation
Selector
2
Ro t ate the On/Off Volume knob c l oc kw i s eto
a normal listening level.
8
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29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 10
OperationOperation
Calibrate For
SWR (Standing
Wave Ratio)
Calibrate for SWR (Standing Wave Ratio)
SWR calibration is done to properly adjust the
length of the antenna and to monitor the quality
of the coaxial cable and all RF connections.
This calibration is critical in order to achieve optimum performance.
1
Select channel 20.
2
Switchto the CAL position.
3
Push and hold mic button.
4
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).
Note
Calibration must be made in an
open area (never in a garage).
Vehicle doors must be closed.No
one should be standing near the
antenna.(See your antenna
directions for more complete
information).
Note
The reading will be slightly higher on Channels 1 and 40 compared to Channel 20.
continued
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Operation
Note
When switched to SWR position the meter needle should
ideally be as far to the left as
possible.Anything over 3 is
not acceptable. A slight
antenna height adjustment
(higher or lower) may be
required.Repeat recalibration
steps.
To Receive
5
While still holding down the mic button,set
the S/RF SWR CAL switch to the SWR position,
to read the SWR reading.
6
Repeat the same steps two through five on
Channel 1 and 40.This will check SWR for all
channels.
To Receive
Selecting A Channel
1
Switch to NOR to select desired channel.
S-Meter
Swings proportionately to strength of incoming
signal when receiving.
Operation
Selecting A
Channel
Note
Switch to 9 (Emergency) or 19
(Information) for instant access
to these channels.
S-Meter
1
Rotate the On/Off Volume knob clockwise
the green RT/TX LED will be illuminated.
12
1
The S/RF-SWR-CAL switch must be in the
S/RF position to read the meter.
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29 WX NW ST manual 3.3 6/15/99 2:53 PM Page 14
OperationOperation
Note
SoundTracker™ gives you
clearer,cleaner reception to
improve CB communications
while on the air.
The SoundTrackerTMSystem
While previous systems only “blanket out”or limit
noise in higher sound frequencies,the revolutionary new SoundTrackerTMSystem actually reduces
noise while leaving the signal intact in the reception 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 SoundTrackerTMWorks
On Reception - “Cuts noise coming in”
With a normal CB,distant signals fall below
the squelch level and are unintelligible.With a
SoundTrackerTMCB,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 - “Strengthens signals going out”
A SoundTrackerTMCB 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.
Activating SoundTracker™
1
Push and release the ST button.Red LED
is illuminated when SoundTracker™ is
turned on.
Activating
SoundTracker
™
1514
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