Cobra 29ltd Hd Le Cb Tranciever Manual

29 LTD HD LE
Operating Instructions 
for your Cobra 29 LTD HD LEEditionCB Radio
The Citizens Band lies between the shortwave
broadcast and 10-meter Amateur radio  bands,
and was established by law in 1949. The Class D
two-way communications service was opened in
1959. (CB also includes a Class A citizens band 
and Class C remote control frequencies.)
FCC Regulations
FCC regulations permit only “transmissions”
(one party to another) rather than “broadcasts”
(to a wide audience). Thus, advertising is not...

1.4-Pin Microphone Connector
2.Power On/Off/Volume/
Squelch Control
3.Dynamike
4.RF Gain
5.Delta-Tune
6.SWR CAL
7.Channel Selector
8.LED Channel Display
9.ANT Indicator
10 .RX (Receive)/ TX ( Transmit)
LED Indicator
11.Channel 9/ Normal Switch
12 .Dimmer Switch
13.CB/PA Switch
14 .NB/ANL ANL Off Switch
15 .S/RF SWR CAL Switch
16.Signal Strength Meter
17.Microphone
Back Side
18.Public Address 
Speaker Jack
19.External Speaker Jack
20.Antenna Connector
21.Power Jack
Thank you for purchasing the Cobra 29...

How to Use Your 
Cobra 29 LTD HD LE
Contents
Features..................................................................................................1
The CB Story.........................................................................................A1
FCC Regulations
FCC Warnings
Included Accessories
Controls & Indicators.......................................................................A2
Our Thanks to You.............................................................................A3
Customer...

Installation Installation
Location
32
Mounting and
ConnectionMounting and Connection
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.
Location
Plan location of transceiver and microphone
bracket before starting the installation.
Select a location that is convenient for operation,
yet does not interfere with the driver or passenger.
The transceiver is usually...

Installation Installation
54
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
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...

Ignition Noise Interference Antennas
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...

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
microphone are connected to their proper
connectors before starting.
Setting Channel Selector 
2
1
Rotate the On/Off Volume knob       clockwiseto
a normal listening level.
Selectone of forty channels and adjust 
volume. The selected channel is indicated by
the LED readout directly above the channel
selector knob1 

Operation Operation
Calibrate For
SWR (Standing
Wave Ratio)
1110
Note
Antenna Indicator LED 
will illuminate when TX if 
SWR is high.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).
continued Switchto the     CAL position.
2
1
Calibrate for SWR (Standing Wave Ratio) 
SWR calibration is done to properly adjust the
length of the antenna and to monitor the...

Operation
13
Operation
12
Note
The reading will be slightly
higher on Channels 1 and 40
compared to Channel 20.
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. The antenna
indicator will light. A slight
antenna height adjustment
(higher or lower) may be
required. Repeat relcalibration
steps.
Repeat the same steps two through five 
on Channel 1 and 40. This will check SWR for
all channels.6
While still holding down...

The     S/FR-SWR-CAL switch must be in the
S/RF position to read the meter.
Operation
15
Operation
14
1
S-MeterS-Meter
Swings proportionately to strength of incoming
signal when receiving.Switchto    NOR to select desired channel.
1
Selecting A
ChannelSelecting A ChannelNB-ANL/ANL/
OFF (Noise
Blanker /
Automatic
Noise Limiter)
Switch 
Note
The RF noise blanker is very
effective in reducing repetitive
noises such as ignition
interference.
When switchedto    ANL the Automatic Noise 
Limiter is activated....