Cobra Electronics 75WX User Manual

75 WX ST manual 10/9/98 9:24 AM Page 2

Operating instructions for your

75WXST

C O M PACT REMOTE MOUNT

C B RADIO W I T H

COBRA ELECTRONICS CORPORATION

6500 W. Cortland Street

Chicago, Illinois 60707

“Cuts Noise Coming In... Strengthens Signals Going Out”

“Ingenious Products for

Easier Communication.”

75 WX ST manual 10/9/98 9:24 AM Page 4

How to use your

CITIZENS BAND RADIO WITH SOUNDTRACKER

CONTENTS:

Introduction ..........................................3

Features ............................................3

Technical Support and service ..........3

Controls and Indicators ..................4/5

Included with your 75WX ....................6

Installation ............................................7

Connector Box Location....................7

Mounting Connector Box ..............8/9

Microphone Hanger........................10

Antenna ..........................................11

Speakers..........................................12

Noise Interference ..........................12

SoundTracker System ......................13

Operation............................................13

Turning your CB On ........................14

Selecting a Channel ........................15

Activating SoundTracker ..................16

Testing SoundTracker........................17

Setting the Squelch......................18/19

LCD Readout ..................................20

75 WX ST

Operation (continued)

Receive / Transmit............................21

One Touch Channel 9 & 19........22/23

Key Lock ..........................................24

Frequency Display ..........................25

All Channel Scan ............................26

Weather Channel ............................27

Channel Saver..................................28

Memory Channels ......................28/29

Dual Watch ................................30/31

If you think you need service ..............32

How your CB can serve you................33

A few rules you should know ..........33

Weather Channel Messages..............34

Channel 9 Emergency Messages ......35

CB 10 Codes....................................36

Frequency Ranges................................37

Speciﬁcations ......................................38

Warranty Information..........................39

Optional Accessories ..........................40

INTRODUCTION

The Cobra 75 WX ST is the ultimate in remote mount CB transceivers and features the SoundTracker system which dramatically eliminates annoying static to deliver crisp, clear sound quality. The 75’s compact, state-of-theart design provides consistent, outstanding performance in almost all conditions or situations. For ultimate satisfaction and performance from your Cobra 75 WX ST, please review these operating instructions fully, prior to use.

FEATURES

• SoundTracker System

• 40 CB Radio Channels

• 10 Weather Channels

• One-touch Emergency Channel 9

• One-touch Information Channel 19

• Remote Mount Installation System

• Full Featured LCD Display Panel

• Squelch Control

• Key Lock

• Channel Saver Circuitry

• Dual Watch Channel Monitor

• Full Channel Scan

• Four Memory Locations

• 10-Foot Flexible Cord

• Quick Disconnect

TECHNICAL SUPPORT

For technical assistance, please call our Automated Help Desk

which can assist you by answering the most

frequently asked questions about Cobra products.

(773) 889-3087

24 hours a day, 7 days a week.

A Consumer 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

75 WX ST manual 10/9/98 9:24 AM Page 6

INTRODUCTION

CONTROLS AND INDICATORS

INTRODUCTION

CONTROLS AND INDICATORS

1. SoundTracker Key

2. Memory Key

3. Channel 9 / 19 / Memory Location 1 Key

4. LCD Display Panel

5. Dual Watch / Memory Location 2 Key

6. Scan / Memory Location 3 Key

7. CB / Weather Channel /

Memory Location 4 Key

8. On / Off / Volume Control

9. Lock Key

10. Squelch Control

11. Microphone

12. Speaker

13. Channel Up

14. Channel Down

15. PTT (Push-To-Talk) Key

16. Quick Disconnect Connector

13 14

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INTRODUCTION

COMPONENTS INCLUDED

75 WX ST Transceiver Connector Box

INSTALLATION

CONNECTOR BOX LOCATION

LOCATION

Mount your Cobra 75 WX ST Connector Box in a convenient location, away from moisture and direct sunlight, in a location that will not interfere with driving.

Cobra suggests mounting it either under the front seat or on the ﬁre wall.

UNDER THE FRONT SEAT INSTALLATION

FIRE WALL INSTALLATION

Installation Hardware Operating Manual

NOTE: Do not mount under

the hood, near heat ducts or in direct line of the car’s heater.

75 WX ST manual 10/9/98 9:24 AM Page 10

INSTALLATION

CONNECTOR BOX

MOUNTING CONNECTOR BOX

1. Hold Cobra 75 WX ST

Connector Box in exact location desired for mounting.

Using it as a template,

mark the location the mounting screws (included).

NOTE: Make certain that nothing will interfere with the installation of the mounting screws, before drilling holes.

3. Mount Connector Box as shown.

for

INSTALLATION

CONNECTOR BOX

CONNECTING WIRES

1. Connect the antenna

cable connector.

2. Connect the red wire marked “BATT” (+) directly to the positive side of the battery or to a connection on the fuse box that is always on.

3. Connect the black wire marked “Ground” (-) to the negative side of the car, usually the chassis. Any other location with good electrical contact (paint removed) will also work.

CAUTION: Leaving the 75 WX ST on after your car is turned off can

drain your car battery when connected to a constant 12 volt source. When connected to accessory 12 volt source unit will turn off.

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INSTALLATION

MICROPHONE HANGER

INSTALLING MICROPHONE HANGER

1. Hold microphone hanger

in location desired for mounting. Make certain that nothing will interfere with the hanger’s installation.

2. Mark the location for the three mounting screws (screws included).

3. Drill and mount microphone hanger.

INSTALLATION

CB ANTENNA INSTALLATION

For the most reliable operation and

maximum range, Cobra recommends

using a vertically polarized, quarter wave

length whip antenna (illustration A). Shorter, loaded-type whips are adequate

when maximum range is not required (illustration B).

NOTE: Mobile installations (cars, trucks,

boats, etc) should be made only with a non-directional antenna system.

• A standard antenna connector (Type SO-239) is provided on the

Connector Box for easy connection to

a standard PL-259 cable termination.

• Cobra antenna models are

recommended; see your local CB dealer

or order directly from Cobra. See order form on page 40.

• For maximum efﬁciency in boat installations, a ground plate is required, unless the vessel has a steel hull. Consult your CB dealer for information regarding

an adequate grounding system.

CB ANTENNA

75 WX ST manual 10/9/98 9:24 AM Page 14

INSTALLATION

SPEAKERS/NOISE INTERFERENCE

EXTERNAL SPEAKER INSTALLATION

1. Mount external speaker in desired location.

2. Plug jack into the back of the Connector Box labled EXT.

*The external speaker should have 4-8 ohms impedance and be able to handle at least 4 watts.

OPERATION

HOW SOUNDTRACKER WORKS

SOUNDTRACKER SYSTEM

While previous systems only “blanked out” or limited noise in higher sound frequencies, the revolutionary new SoundTracker System 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 SOUNDTRACKER WORKS

On Reception

With a normal CB, distant signals fall below the squelch level and are unintelligible. With a SoundTracker CB, the noise level is cut by 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.

–

“Cuts Noise Coming In”

1312

IGNITION NOISE INTERFERENCE

The alternator and ignition system in your vehicle may limit your ability to receive low signal levels. Other noise interference can be the result of several different installation variables. Consult your Cobra dealer or a 2-way radio technician to help locate and correct the source of severe noise interference.

On Tra n s m i s s i on

A SoundTracker 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.

–

“ S t rengthens Signals Going Out”

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