How to Use Your Cobra 29 LX LE
Contents
Features..........................................................................................................1
Features of This Product
The CB Story..................................................................................................A1
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FCC.Regulations
FCC.Warnings
Included.Accessories
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Selectable 4-Color LCD Display
10 Weather Channels
Weather Scan
Controls & Indicators.................................................................................A2
Our Thanks to You......................................................................................A3
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Customer.Support
Emergency Weather Alert
40 CB Radio Channels
40 Channel Scan
Installation
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Location.....................................................................................................2
Mounting.and.Connection.................................................................2
Antennas
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CB.Antenna...............................................................................................6
Marine.Installation.................................................................................6
Memory Channels
Ignition Noise Interference....................................................................7
Channel Frequency Read-Out
Radio Check Diagnostic
Operating Your 29 LX LE
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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
To.Transmit...............................................................................................14..
Heavy-Duty Dynamic
Microphone
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Full 4 Watts AM RF Power Output
SWR Calibration Meter
®
Setting.Dynamike ................................................................................15
Menu.Mode..............................................................................................16
Radio.Check.Mode.................................................................................17
Setting.Display.Color.Mode................................................................18
Setting.Brightness.Mode.....................................................................19.
Setting.Contrast.Mode.........................................................................19
Weather.Information.............................................................................20
Weather.Channels..................................................................................21
Weather.Alert.Mode..............................................................................22
Setting.Weather.Alert.Scan................................................................22
Setting.Weather.Auto.Scan................................................................22
Key.Tones.Mode.....................................................................................23
Software.version/Factory.Settings...................................................23
NB-ANL/Off.(Noise.Blanker/Automatic..........................................24
Noise.Limiter.Switch)
Instant Channel 19 and 9
Front Panel 4-Pin Microphone
Connector
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Switchable Automatic Noise
Limiter & Noise Blanker
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Adjustable Dynamike Boost
Tactile Controls
9 Ft Mic Cord
RF.Gain.Control.......................................................................................24
Program.Memory.Channels................................................................25
Scan/Memory.Scan................................................................................25
Scan.CB.Channels...................................................................................29
Scan.Memory.Channels.......................................................................26
Dimmer.Control......................................................................................26
Setting.Squelch.......................................................................................26
S/RF.Meter.................................................................................................28
External.Speaker.....................................................................................29
PA.(Public.Address)................................................................................30
Home.And.Office.Set-Up.....................................................................32
Temporary.Mobile.Set-Up...................................................................33
Programmable Dimmer Control
RF Gain
How Your CB Can Serve You..................................................................34
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A.Few.Rules.You.Should.Know.........................................................34
Channel.9.Emergency.Messages......................................................34
CB.10.Codes..............................................................................................36
Frequency Ranges......................................................................................38
29 LX LE Specifications.............................................................................39
Warranty Information...............................................................................40
Optional Accessories.................................................................................41
Optional Accessories Order Info..........................................................42
If You Need Service/Trademark Info.................................Back.Cover
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1
Installation
3
..Connect.the.antenna.cable.plug.to.the.recep-
tacle.marked.“ANT”..on.the.back.of.the.unit..
continued
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3
Installation
Note
Before installing the CB radio,
visually check the vehicle’s
battery connection to deter-
mine which terminal, positive
or negative, is grounded (pos-
itive is the larger of the two)
to the engine block (or chas-
sis). 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 per-
mits operating the unit without
running the engine.
4
5
Note
. .In.a.negative.grounded.vehicle,.connect.the.
red.lead.of.the.DC.power.cord.to.an.accessory.
12.volt.fuse.
In positive ground vehicles the
red wire goes to the chassis and
the black wire is connected to
the ignition switch.
. .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..
Note
When connected to an acces-
sory fuse, unit will self test
the emergency weather alert
automatically when ignition
is turned on. Turns itself on & off.
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4
Installation
6
7
..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.
Note
If microphone is not
connected, audio will not
be heard at speaker.
8
..Attach.the.4-pin.microphone.cable.to..
receptacle.on.front.of.unit.and.install.unit..
in.bracket.securely.
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5
Antennas
CB Antenna
Note
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.maxi-
mum.power.output..Cobra.loaded.type.antenna.
models.are.highly.recommended.for.most.instal-
lations..For models with Weather Feature (WX),
a Dual Band (Center Load/Base Load) antenna
is recommended..Consult.your.Cobra.dealer.for.
further.details,.or.call.773.889.3087.and.speak.to.a.
Cobra.representative..
For optimum performance in
passenger cars the ideal anten-
na 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
1
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 773-
889-3087 for further informa-
tion.
.
.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..
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6
Ignition Noise Interference
Use.of.a.mobile.receiver.at.low.signal.levels.is.
normally.limited.by.the.presence.of.electrical.
noise..The.primary.source.of.noise.in.automo-
biles.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.29.LX.LE.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.
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7
Operation
Turning On
Turning On
Make.sure.the.power.cord,.antenna.and.micro-
phone.are.connected.to.their.proper.connectors.
before.starting..
1
.
.Rotate.the.On/Off Volume.knob.clockwise.to.
turn.unit.on.and.adjust.to.a.normal.listening.
level.
CH 9/
SCAN
19
MEM SCAN
MEM WX !
SWR
RF GAIN
DELTA TUNE
T BACK
CAL
2
..Press.the.CB/PA/WX.button.to.change.modes..
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8
Operation
Setting Channel Selector
Setting Channel
Selector
NB/ANL
2
3
1.5
NB/ANL
ANL
CAL
SWR
TX
RX
S/RF
S/RF
SWR
CAL
RF
SIG
Note
3
5
7
9
1
+30dB
SWR/CAL
MEM WX !
RF GA
Press CB/WX/PA to select CB,
weather channels or PA (public
address) modes.
VOL
SQ
DYNAMIKE
OFF
MIN
MIN
3
. .Select.one.of.forty.channels.and.adjust..
volume..The.selected.channel.(1.through.
40).will.be.indicated.by.the.readout.directly.
above.the.channel.selector.knob
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9
Operation
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.opti-
mum.performance.
2
3
1.5
CAL
SWR
RX
S/RF
RF
SIG
3
5
7
9
1
+30dB
SWR/CAL
MEM
VOL
SQ
DYNAMIKE
OFF
MIN
M
1
.
Select.channel.20.
2
Press.SWR/CAL button.to.select.CAL.
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Operation
PUSH &
HOLD
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).
3
.Push and hold.mic.button.
SCAN
19
Note
MEM SCAN
The reading will be slightly
higher on Channels 1 and 40
compared to Channel 20.
ESC
SWR
CAL
RF GAIN
DELTA TUNE
T BACK
OFF
MIN
MAX
4
..While.holding.mic.
button.adjust.the.
SWR CAL.knob.so.
the.meter.swings.
to.the.CAL.mark.on.
the.meter.(located.
on.the.right)..
continued
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11
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