Cobra 29 WX ST Operating Instructions Manual Download Page 7

Operation (Cont.)

11

C. Rear Panel

1.

PUBLIC ADDRESS:

An external 8-ohm 4.0 watt PA speaker may be connect-

ed to the PA Speaker Jack when this unit is used as a public address system.
The speaker should be directed away from the microphone to prevent acoustic
feed-back. Physical separation or isolation of the microphone and speaker
must be employed when operating the PA at high output levels.

2.

EXTERNAL SPEAKER:

The External Speaker Jack is used for remote receiver

monitoring. The external speaker should have 8-ohm impedance and be rated
to handle at least 4.0 watts. When the external speaker is plugged in, the inter-
nal speaker is automatically disconnected.

3.

ANTENNA CONNECTOR:

This SO-239 connector permits connection of the

transmission line cable PL-259 connector to the transceiver.

4.

POWER. 

This jack permits connection of the DC power to the transceiver. A

power cord with polarized plug is supplied with the radio. The polarized plug
ensures that the power will always be connected properly.

Operating Procedure to Receive CB Broadcasts

1.

Be sure that the power cord, antenna and microphone  are connected to the
proper connectors before proceeding further. The PA/CB  should be in the CB
position.

2.

Turn the radio ON by rotating the VOLUME CONTROL clockwise.

3.

Set the RF GAIN CONTROL fully clockwise.

4.

Rotate SQUELCH CONTROL counterclockwise until incoming signal is heard.

5.

Set the Channel Selector Switch to the desired channel.

6.

Set VOLUME CONTROL to a comfortable listening level.

7.

Engage the SoundTracker system by depressing the buttons labeled ST.

SoundTracker system allows you to reduce unwanted background noise (stat-
ic) and increase the signal for better reception.

Listen to the background noise from the speaker. Turn the SQUELCH CONTROL
slowly clockwise until the noise JUST disappears (no signal should be present).
Leave the control at this setting. The squelch is now properly adjusted. The receiv-
er will remain quiet until a signal is actually received. Do not advance the control
too far, or some of the weaker signals will not be heard.

1

2

3

4

14.

CH.19/CH.9/NORMAL SWITCH. 

Used for instant selection of emer-

gency Channel 9 (CH. 9 position) or information Channel 19. In NOR-
MAL position, all 40 CB channels are selected by the CHANNEL SELEC-
TOR switch (9).

15.

S-METER. 

Swings proportionally to the strength of the incoming signal

during receiving. The S/RF-SWR-CAL switch must be in the S/RF position.

RF-METER.

Swings proportionally to the RF output power while trans-

mitting. The S/RF-SWR-CAL switch must be in the S/RF position.

SWR METER.

Measures standing wave ratio of the antenna system.

Used to properly adjust the length of the antenna and to monitor the
quality of the coaxial cable and all RF electrical connections. If there is any
degradation whatsoever in any of the foregoing, due to humidity, salt
spray, vibration or corrosion, the SWR meter reading will rise, thereby
indicating that a problem exists.
To calibrate, switch to the "CAL" position, transmit by pressing the mike
switch, and adjust the SWR control to the "CAL" mark on the meter; then
switch to "SWR" position for the SWR measurement.

16

. RX/TX/WX LED INDICATOR.

When your radio is in the CB receive

mode, the LED will be green. When in transmit mode, the LED will be red
and in Weatherband mode, the LED will be orange.

17.

LED  CHANNEL DISPLAY.

The selected channel will be displayed.

Display will be off when radio is in Weatherband mode.

18.

SOUNDTRACKER™ SWITCH.

Depressing this button turns on the

SoundTracker system in your CB.

19.

SOUNDTRACKER™ INDICATOR.

A red LED will illuminate when the

SoundTracker system is engaged on your CB.

B. PRESS-TO-TALK MICROPHONE.

Both the receiver and transmitter are

controlled by the Press-to-Talk switch on the microphone. Press the switch and
the transmitter is activated; release the switch to receive. When transmitting,
hold the microphone two inches from the mouth and speak clearly in a nor-
mal voice. The microphone provided with your radio is a detachable low-
impedance dynamic type. The  radio will not transmit in the Weatherband
mode even though pressing the microphone switch will cause the red TX LED
to illuminate.

Operation (Cont.)

10

Summary of Contents for 29 WX ST

Page 1: ...NSTRUCTIONS FOR YOUR 40 CHANNEL CITIZENS BAND 2 WAY MOBILE RADIO Model 29 WX ST Cobra Electronics Corporation 6500 W Cortland Street Chicago IL 60707 PRINTED IN HONG KONG COBRA ELECTRONICS CORP 1997 480 113 P 001 ...

Page 2: ...s of a unique nature with parts other than those recommended by Cobra may cause violation of the technical regulations of Part 95 of the FCC Rules or violation of Type Acceptance requirements of Part 2 of the Rules Citizens Band CB Radio operators are no longer required to obtain an FCC license to operate their CB equipment or provide station identification Nevertheless an operator of a CB radio s...

Page 3: ... when connected PA SYSTEM Power Output 4 watts into external speaker External Speaker for PA 8 ohms when PA CB switch is in PA the PA speak er also monitors the receiver separate jack provid ed SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE Not Supplied 3 Channel Channel Frequency in MHz 21 27 215 22 27 225 23 27 255 24 27 235 25 27 245 26 27 265 27 27 275 28 27 285 29 27 295 30 27 305 31 27 315 ...

Page 4: ...the emergency weather alert normal initialization procedure 7 Mount microphone bracket on right side of the transceiver or near it using two screws supplied When mounting in an automobile place the bracket under the dash so the microphone is readily accessible Installation Location Plan the location of the transceiver and microphone bracket before starting the installation Select a location that i...

Page 5: ...tance Only a properly matched antenna system will allow maximum power transfer from the 50 ohm transmission line to the radiating element In mobile installations cars trucks boats etc an antenna system that is non directional should be used A vertically polarized quarter wavelength whip antenna provides the most reli able operation and greatest range Shorter loaded type whip antennas are more attr...

Page 6: ...y the automatic noise limiter in the audio circuits is activated When it is in the NB ANL position the RF noise blanker also is activated The RF noise blanker is very effective for repetitive impulse noise such as igni tion interference 12 PA CB SWITCH Selects the mode of operation In the CB position the PA function is disabled and the unit will transmit and receive on the selected frequency The P...

Page 7: ...d Do not advance the control too far or some of the weaker signals will not be heard 1 2 3 4 14 CH 19 CH 9 NORMAL SWITCH Used for instant selection of emer gency Channel 9 CH 9 position or information Channel 19 In NOR MAL position all 40 CB channels are selected by the CHANNEL SELEC TOR switch 9 15 S METER Swings proportionally to the strength of the incoming signal during receiving The S RF SWR ...

Page 8: ... even if the CB WX Switch is in the CB mode or the unit is turned off if desired see NOTE below This enables you to monitor CB frequencies and still be warned by the National Weather Service Emergency Alert When you hear the alert place the CB WX switch in the WX position You will then be able to hear the Weather Warning Broadcast NOTE If you are using the CB mode remember to change the CB WX Swit...

Page 9: ...mer Service Representative can be reached through this same number 8 00 am 8 00 pm Monday through Friday CST Technical assistance is also available on line in the Frequently Asked Question FAQ section at www cobraelec com or by e mail to productinfo cobraelec com 10 35 Confidential information 10 36 Correct time is 10 37 Wrecker needed at 10 38 Ambulance needed at 10 39 Your message delivered 10 4...

Page 10: ... form of proof of purchase such as a me chanical reproduction or carbon or a sales receipt If you send the original receipt it cannot be returned 2 Send the entire product Must include CB unit and microphone 3 Enclose a description of what is happening with the unit Include a typed or clearly printed name and address of where the unit is to be returned 4 Pack unit securely to prevent damage in tra...

Page 11: ...ion 6500 W Cortland Street Chicago IL 60707 19 18 DYNAMIC MICROPHONE Replacement microphone with 4 pin screw on connector CA 73 19 95 DC POWER CORD Exact replacement 426 002 N 001 7 50 MOUNTING BRACKET Exact replacement 251 353 9 001 4 50 MOUNTING BRACKET SCREWS Exact replacements 634 081 9 001 60 ea POWER MICROPHONE Amplified power mic CA 75 19 95 POWER NOISE CANCELLING MICROPHONE Amplified power...

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