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How to Use Your
Cobra 29 NW ST
Contents
Features..................................................................................................1
Controls & Indicators.......................................................................A1
Installation
Location .............................................................................................2
Mounting and Connection .........................................................2
Features of This Product
Antennas
CB Antenna............
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Installation Installation Location Location Plan location of transceiver and microphone bracket before starting the installation. DATE OF FCC ID:BBO3K229LTD MFG :JUNE 98 ANT COBRA PA.SP. EXT.SP. MADE IN CHINA Select a location that is convenient for operation, + POWER– SERIAL NO.:806135776 PRECISION ENGINEERED PRODUCT OF COBRA ELECTRONICS CORP. CHICAGO, ILL.60707 yet does not interfere with the driver or passenger. The transceiver is usually mounted to the under- side of the dash with the mi
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Installation Installation FCC ID:BBO3K229LTD ANT COBRA PA.SP. EXT.SP. MADE IN CHINA + POWER– CT OF CAGO, ILL.60707 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. 6 Plug power cable into back of unit marked “Power”.Be sure to observe polarity markings. Note In positive ground vehicles the 7 Mount the microphone red wire goes to the chassis and bracket on either side of the black wire is c
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Antennas Ignition Noise Interference CB Antenna Use of a mobile receiver at low signal levels is CB Antenna normally limited by the presence of electrical Since the maximum allowable power output of noise. The primary source of noise in automobiles the transmitter is limited by the IC/FCC, the Note is from the alternator and ignition system. antenna is critical in affecting transmission dis- For optimum performance in Typically, when signal level is adequate, the back- tance. Only a properly mat
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Operation Operation Turning On Setting Channel Selector Turning On Setting Channel Make sure the power cord, antenna and micro- Selector phone are connected to their proper connectors 29 NW ST before starting. TONE NB/ CH19 CB HI ANL RX/TX ANL CH9 PA NOR OFF NOR 29 NW ST RFGAIN DIMMER SWR CAL SWR 23 CAL S/RF NB/ CB ANL RF SWR ANL SIG 1 3 5 7 9 +30dB PA OFF CAL RFGAIN VOL SQL DYNAMIKE AX MIN MAX MIN MAX 1 Select one of forty channels and adjust OFF MIN MAX MIN MAX volume. The selected cha
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Operation Operation Calibrate for SWR (Standing Wave Ratio) Calibrate For SWR (Standing SWR calibration is done to properly adjust the PUSH & length of the antenna and to monitor the quality Wave Ratio) of the coaxial cable and all RF connections. HOLD This calibration is critical in order to achieve opti- mum performance. Note Calibration must be made in an open area (never in a garage). 29 NW ST TONE NB/ CH19 CB HI Vehicle doors must be closed. No ANL RX/TX ANL CH9 one should be standing near
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Operation Operation Selecting A Channel Selecting A 29 NW ST Channel SWR 23 CAL S/RF NB/ CB ANL RF SWR ANL SIG 1 3 5 7 9 +30dB PA CAL OFF TONE CH19 B HI Note VOL SQL DYNAMIKE RFGAIN RX/TX CH9 Note Switch to 9 (Emergency) or 19 A NOR NOR (Information) for instant access When switched to SWR posi- IN DIMMER SWR CAL to these channels. tion the meter needle should OFF MIN MAX MIN MAX ideally be as far to the left as possible. Anything over 3 is MAX MIN MAX 5 not acceptable. A slight While still
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Operation Operation TM The SoundTracker System Activating SoundTracker™ Activating ™ While previous systems only “blanket out” or limit SoundTracker noise in higher sound frequencies, the revolution- TM ary new SoundTracker System actually reduces TONE Note noise while leaving the signal intact in the recep- HI RX/TX tion mode. In the transmission mode, it actually SoundTracker™ gives you NOR strengthens the signal, providing you with a clearer, cleaner reception to DIMMER significant reductio
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Operation Operation NB-ANL/ANL/OFF (Noise Tone Hi/Nor NB-ANL/ANL/ Tone Hi/Nor This switch is used to shape the Audio Response Blanker/Automatic Noise Limiter) Switch OFF (Noise to the operators preference. Blanker/ Automatic 29 NW ST Noise Limiter) SWR 23 CAL S/RF NB/ CB TONE ANL CH19 RF B HI Switch SWR ANL RX/TX SIG 1 3 5 7 9 +30dB CH9 PA CAL OFF A NOR NOR VOL SQL DYNAMIKE RFGAIN IN DIMMER SWR CAL OFF MIN MAX MIN MAX MAX MIN MAX Note The RF noise blanker is very 1 When switched to ANL
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Operation Operation Gate open Dimmer Switch Dimmer Switch 29 NW ST TONE HI STRONG SIGNALS STRONG SIGNALS STRONG SIGNALS NOR DIMMER MEDIUM SIGNALS MEDIUM SIGNALS MEDIUM SIGNALS 29 NW ST TONE Note HI WEAK SIGNALS WEAK SIGNALS WEAK SIGNALS R MIN MA CH9 The Dimmer controls the NOR brightness of the front panel, DYNAMIKE RFGAIN DIMMER 2 Full counterclockwise rotation opens the NOISE NOISE NOISE signal strength meter and “gate” allowing all signals in. channel display. MIN MAX 29 NW ST TONE HI 1
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Operation Operation To Transmit Transmit To Transmit Transmit 29 NW ST TONE CH19 Caution! NB/ CB HI ANL RX/TX PUSH & ANL CH9 Be sure the antenna is properly PA NOR OFF NOR HOLD connected to the radio before RFGAIN DIMMER SWR CAL transmitting. Prolonged trans- mitting without an antenna, or a poorly matched antenna, AX MIN MAX MIN MAX could cause damage to the transmitter. 1 Select desired channel. Setting Dynamike 1 Push and hold mic button to transmit. Setting Transmitter is now activated.
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Operation Operation RF Meter External Speaker RF Meter External Speaker This meter swings proportionately to the RF The external speaker jack is used for remote output (outgoing signal) while transmitting. receiver monitoring. Note 29 N The external speaker should SWR 23 CAL S/RF NB/ have 8-ohm impedance and be D ANT ANL PA.SP. EXT.SP. RF rated to handle at least 4.0 A SWR ANL + POWER– SIG 1 3 5 7 9 +30dB watts. When the external speak- CAL OFF er is plugged in, the internal speaker is automa
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Operation Operation PA (Public Address) PA (Public Address) PUSH & Note HOLD Speaker should have 8-ohm TD ANT A impedance and be rated to PA.SP. EXT.SP. A + POWER– handle at least 4.0 watts. 7 Note The speaker should be directed away from the microphone to prevent acoustic feedback. 1 Connect an external PA speaker to the PA jack 3 on the rear panel. Push and hold microphone button and speak Note in a normal voice.Your voice will now transmit Activity on the CB channel on the PA speaker. wil
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Home And Office Set-Up Temporary Mobile Set-Up Base Station Operation Base Station (From 120V AC House Current) Operation FCC ID:BBO3K229LTD ANT COBRA PA.SP. EXT.SP. To operate your transceiver from home or office (From 120V AC MADE IN CHINA + POWER– you will need a 13.8 volt DC Power Pack rated at a ODUCT OF House Current) P. CHICAGO, ILL.60707 minimum of 2 amps, and a properly installed base station antenna. 2 Plug power cable into back of unit marked “Power”.Be sure to observe polarity mar
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How Your CB Can Serve You How Your CB Can Serve You •Warn of traffic problems The FCC gives these examples of permitted and •Provide weather and road data prohibited messages for channel 9. These are •Provide help in event of an emergency only guidelines and not all-inclusive: •Provide direct contact with home or office •Assist police by reporting erratic drivers Permitted Example Message •Get “local information” to find destination •Communicate with family and friends Yes“Tornado sighted
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How Your CB Can Serve You How Your CB Can Serve You Code Meaning CB 10-Codes CB 10-Codes 10-29 Time is up for contact Citizen Bands have adopted the “10-CODES”for 10-30 Does not conform to IC/FCC rules standard questions and answers. These codes 10-33 Emergency traffic provide quick and easy communication, especially 10-34 Trouble at this station in noisy areas. Following are some of the more 10-35 Confidential information common codes and meanings: 10-36 Correct time is Code M
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Frequency Ranges 29 NW ST Specifications GENERAL The COBRA 29 NW ST transceiver represents one of CHANNELS . . . . . . . . . . . . . . . . . . . . . . . CB - 40 CH the most advanced AM two-way radios used as a FREQUENCY RANGE . . . . . . . . . . . . . . . CB - 26.965 TO 27.405 MHZ FREQUENCY TOLERANCE . . . . . . . . . . 0.005 % Class D station in the Citizens Radio Service. This FREQUENCY CONTROL . . . . . . . . . . . . PLL (PHASE LOCK LOOP) SYNTHESIZER unit features advanced Phase Lock Loop (P
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Limited Two Year Warranty Optional Accessories COBRA ELECTRONICS CORPORATION warrants that its COBRA CB Radios, and the component parts thereof, will be free of defects in workmanship and materials for period of two (2) years from the date of first consumer purchase. COBRA will, without charge, repair or replace, at its option, defective CB radios, products or component parts upon delivery to a COBRA factory Service Department, accom- panied by proof of the date of first consumer purchase, 21” B
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Optional Accessories 4 Pin Premium Noise- 4 Pin Replacement Dynamic Cancelling Microphone Microphone Wood Grain HG M73 HG M84W $24.95 $89.95 Dynamic External Speaker Power Microphone 4 Pin Noise Canceling Microphone HG S100 HG M75 HG M77 $34.95 $34.95 $39.95 Noise Canceling External Speaker You Can Find These Fine Accessories At Your Local HG S300 Cobra® CB Dealer $39.95 If you wish, you can order directly from Cobra®. Send order, your name, address and method of payment. Order by phone: Call 5
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RF GAIN DIMMER RF GAIN DIMMER 29 NW ST 29 NW ST TONE HI NOR NOR TONE HI NOR NOR 29 NW ST The CB Story 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 Operating Instructions 2 and Class C remote control frequencies.) for your Cobra 29 NW ST IC/FCC Regulations 1 IC/FCC regulations permit only “transmissions” CB Radi
