Introduction

Our Thanks to You and FCC License Required

Our Thanks to You

Thank you for purchasing a Cobra amateur mobile radio. Properly used, this Cobra product will give you many years of reliable service.

FCC License Required

Owners Manual
The United States Federal Communications Commission (FCC) requires that users of the frequencies on which this radio operates be licensed. See page 16 for licensing and other FCC information.
The Cobra line of quality products includes: CB Radios microTALK Radios Radar/Laser Detectors Safety Alert Traffic Warning Systems Handheld GPS Receivers Mobile GPS Navigation Systems HighGear Accessories CobraMarine VHF Radios Power Inverters Accessories
AMATEUR 10 METER MOBILE RADIO

1 GTL DX 50

English Nothing comes close to a Cobra
Printed in Philippines Part No. 480-216-P Version A
2005 Cobra Electronics Corporation 6500 West Cortland Street Chicago, Illinois 60707 USA www.cobra.com

A1 English

Nothing comes close to a Cobra

English

Controls and Indicators
S/RF / SWR / CAL RF Power Hi / Low PA / AM / FM Analog Meter Band A/B/C/D +10 kHz / Off RX / TX Indicator NB/ANL / ANL / Off Dual 7 Segment Frequency Display

Microphone and Features

Microphone
Press-To-Talk Button (PTT)
WARNING RISK OF ELECTRIC SHOCK. DO NOT OPEN. DO NOT REMOVE COVER OR BACK. NO USER SERVICEABLE PARTS INSIDE. REFER TO SERVICING TO QUALIFIED SERVICE PERSONNEL.

Features

-341 Operating Frequencies Allows operation on all available frequencies. 15 Watts Output Power Provides maximum power on AM and FM. Dual Finals Provides steady output power. Dual Power Allows operation on Low and High power. SWR Calibration Allows measurement and adjustment of the antenna system. Antenna Warning Indicator Illuminates when the antenna system needs repair or adjustment. Echo Control Allows control of echo effect. -Talk-Back Control Allows user to monitor feedback of output signal. Large Analog Meter Provides high visibility of status meter. NightWatch Panel Electroluminescent illumination of front panel for night operation. 4 Pin Front Mic Connector Allows convenient installation in-dash. Frequency Counter Jack Allows connection of a 6-digit frequency counter. Mic Gain Control Allows increased voice clarity by dynamically boosting microphone.
Microphone Connector Off / On / Volume (center knob) Squelch (outer ring) Public Address (PA) Speaker Connector External Speaker Connector
Microphone Gain (center knob) RF Gain (outer ring) Echo (center knob) Talk Back (outer ring)
-Frequency Selector Antenna Warning Indicator
Dim (center knob) SWR CAL (outer ring)

Antenna Connector

This Cobra radio has a superior receiver that includes an RF gain control and noise blanker circuitry as well as an automatic noise limiter. The receiver also features increased protection against cross modulation and strong adjacent signals. To obtain maximum performance, please read carefully the descriptions and operating instructions in this manual.

A3 English

Power Cord Connector

A2 English

Frequency Counter Connector
Contents Product Features
Introduction Our Thanks to You. A1 FCC License Required. A1 Controls and Indicators. A2 Microphone. A3 Features. A3 Your Mobile Radio Specifications. 2 Included in this Package. 4 Installation and Connection. 5 Operation. 8 Controls. 9 Frequency. 12 Indicators. 14 Microphone. 14 Operating to Receive. 15 Operating to Transmit. 15 Maintenance. 16 Government Regulatory Information. 16 Alternate Microphones and Installation. 17 ARRL Q Signals. 20
Warranty Warranty. 22 Trademark Acknowledgement. 22
Customer Assistance Product Service. 23 Accessories. 24 Order Form and Optional Accessories. 25

Your Mobile Radio

Specifications
28.0 to 29.7 MHz Phase Lock Loop (PLL) synthesizer 0.005% -22F to 122F (-6C to + 50C) 50 ohms Standard SO 239 type Plug-in dynamic with Press-To-Talk switch and coiled cord 13.8 V DC nominal, 15.9 V max., 10.0 V min. (positive or negative ground) Transmit: 3.0 A Receive (squelched): 0.5 A Receive (maximum audio output): 1.2 A 238" (H) x 778" (W) x 934" (D) [6 cm (H) x 20 cm (W) x 24.8 cm (D)] 4.8 lbs. Illuminated indicates relative output power, received signal strength, and SWR 4 watts
AM: 0.5 V for 10 dB S/N FM: 0.25 V for 12 dB S/N 300 to 3,000 Hz 45 dB 75 dB 65 dB 40 dB adjustable for optimum signal reception Adjustable threshold less than 0.5 V Switchable Switchable Meter shows relative signal strength. Receive LED glows green when receiving a signal.

General Frequency Range Frequency Control Frequency Stability Operating Temperature Range Antenna Impedance Antenna Connector Microphone Input Voltage Current Drain
Receiver Sensitivity Audio Frequency Response Maximum Signal to Noise Ratio Image Rejection Adjacent Channel Rejection RF Gain Control (AGC) Squelch Automatic Noise Limiter (ANL) Noise Blanker (NB) Receive Indicators
Size Weight Meter (3-in-1) Built-in Speaker Transmitter Power Output Frequency Response Frequency Tolerance Transmit Distortion Spurious Harmonic Emission Output Indicators Antenna Warning LED
PA System Power Output Speaker for PA (Not Supplied) External Speaker Power Output External Speaker (Not Supplied) 4 watts into external speaker 8 ohms 4 watts into PA speaker 8 ohms
Low 4 watts; High 15 watts 300 to 3,000 Hz 500 Hz 2% -65 dB Meter shows relative RF output power and SWR. Transmit LED glows red when transmitter is in operation. Glows red when SWR is greater than 3.0.
(Specifications subject to change without notice)

Included in this Package

Installation and Connection
You should find all of the following items in the package with your radio.
Refer to the illustration on page A3 for connection points on the back of the unit while installing your radio. --

Transceiver

Universal Mounting Bracket
Location Plan the location of the transceiver and microphone brackets before starting the installation. Select a location that is convenient for operation and does not interfere with the driver or passengers in the vehicle. In automobiles, the transceiver is usually mounted below the dash panel, with the microphone bracket beside it. -Mounting Your mobile radio is supplied with a universal mounting bracket. When mounting the bracket and radio to your car, make sure it is mechanically strong. Also provide a good electrical connection to the chassis of the vehicle. Proceed as follows to mount the transceiver: -Mount the Transceiver 1. After you have determined the most convenient location in your vehicle, hold the mobile radio with the mounting bracket in the exact location desired. If nothing will interfere with mounting it in the desired position, remove the thumbscrews and use the mounting bracket as a template to mark the holes for the mounting screws. Before drilling the holes, make sure nothing behind the surface will be damaged or interfere with the installation. 2. Connect the antenna cable plug to the standard receptacle (ANT) on the rear panel. Most antennas are terminated with a type PL-259 plug and mate with the receptacle. 3. Connect the red DC power input wire (with the fuse) to +13.8 V DC. This wire extends from the rear panel. Connect directly to positive terminal (red) of vehicle's battery.

Antenna In addition to transmitter power, the antenna is an important factor affecting transmission distance. 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, etc.), an antenna system that is non-directional should be used. A vertically polarized, quarter-wavelength whip antenna provides the most reliable operation and greatest range. Shorter, loaded-type whip antennas are more attractive, compact and adequate for applications where the maximum possible distance is not required. Also, the loaded whips do not present the problems of height imposed by a full quarter-wavelength whip. Mobile whip antennas utilize the metal body of the vehicle as a ground plane. When mounted at a corner of the vehicle, they are slightly directional, in the direction of the body of the vehicle. For all practical purposes, however, the radiation pattern is non-directional. The slight directional characteristic will be observed only at extreme distances. A standard antenna connector (type SO 239) is provided on the transceiver for easy connection to a standard PL 259 cable termination. If the transceiver is not mounted on a metal surface, it is necessary to run a separate ground wire from the unit to a good metal electrical ground in the vehicle.
Installation and Connection and Operation

Controls

If you are having difficulties in adjusting your antenna, check the following: 1. All doors must be closed when adjusting the antenna. 2. Make sure the antenna base is grounded. 3. Check your coaxial cable routing it may be pinched where routed into the car. 4. Try a different location on your car keeping in mind the radiation pattern you want. 5. Make sure the antenna is perfectly vertical. 6. Try a different location in your neighborhood. Stay away from large metal objects (metal utility or light poles, fences, etc.) when adjusting. NOTE The radio will operate into a SWR of 2 to 1 indefinitely and sustain an SWR of 20 to 1 for a maximum of 5 minutes at rated operating conditions. -External Speaker The external speaker jack (EXT) on the rear panel is used for remote receiver monitoring. The external speaker should have 8 ohms impedance and be able to handle at least four watts. When the external speaker is plugged in, the internal speaker is disabled. -Public Address To use the transceiver as a public address system, connect an external 8 ohm speaker that is able to handle at least four watts to the PA jack on the rear panel. Direct the speaker away from the microphone to prevent acoustic feedback. Physical separation or isolation of the microphone and speaker is important when operating the PA at high output levels.

Off / On / Volume Turn clockwise to apply power to the unit and to set the desired listening level. During normal operation, the volume control is used to adjust the output level obtained either at the transceiver speaker or the external speaker, if used. -Squelch This control is used to cut off or eliminate receiver background noise in the absence of an incoming signal. For maximum receiver sensitivity, it is desired that the control be adjusted only to the point where the receiver background noise or ambient background noise is eliminated. Turn fully counterclockwise, then slowly clockwise, until the receiver noise disappears. Any signal to be received must now be slightly stronger than the average received noise. Further clockwise rotation will increase the threshold level that a signal must overcome in order to be heard. Only strong signals will be heard at the maximum clockwise setting. ---
Microphone Gain Adjusts the microphone gain in the transmit and PA modes. This controls the gain to the extent that full talk power is available several inches away from the microphone. In the Public Address (PA) mode, the control functions as the volume control for the PA speaker. --RF Gain Used to reduce the gain of the RF amplifier when receiving very strong signals. PA / AM / FM Selects the mode of operation. In the AM and FM positions, the PA function is disabled and the unit will transmit and receive on the internal speaker. In the PA mode, incoming transmissions will be heard through the PA speaker. This allows you to monitor messages while outside of your vehicle. To use the PA feature, a speaker having a voice coil impedance of 8 ohms and a power handling capability of at least four watts should be used. This speaker must be plugged into the PA SPKR jack at the rear of the transceiver. If the public address feature is to be used primarily for outdoor applications, the use of a weatherproof horn-type public address speaker is recommended. The durability of this type speaker plus the inherent efficiency of such a speaker will provide more than adequate results when combined with the high audio output level available from your radio. With the PA speaker connected as outlined previously, be sure that there is physical separation between the microphone and the speaker itself. If the speaker is located too close to the microphone, acoustic feedback will result when the public address system is operated at high volume. A directional-type outdoor speaker reduces the amount of isolation required. Some experimentation will determine the minimum amount of isolation required for a given sound level from the public address system. NOTE The microphone gain knob also controls the PA volume when in PA mode.

Operation

There are 15 controls and 4 indicators on the front panel of your mobile radio. These are shown in the illustration on page A2 which may be folded out for reference when using this section.
RF Power Hi / Low Places the transmitter in high power (15 watts) mode when the switch is in the hi position and in low power (4 watts) mode when it is in the low position. -S/RF / SWR / CAL When this switch is in the S/RF position, the display meter swings proportionally to the strength of the signal received or the output power being transmitted. --
NB/ANL / ANL / Off When this switch is in the ANL position, only the automatic noise limiter in the audio circuits is activated. When the switch is placed 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 ignition interference. When the switch is in the off position, both the noise blanker and the automatic noise limiter are disabled. -Echo This control is used to adjust the output level of the echo circuit. It is also detented at the fully counter clockwise position to turn off the echo circuit. -Talk Back This control is used to adjust the desired amount of modulation talk back that is present at the speaker during transmit. --
When it is in the SWR position, the standing wave ratio is measured on the display meter. When it is in the CAL position, the SWR function can be calibrated on the display meter by adjusting the SWR CAL control to move the needle to the calibration mark on the display meter face. -Dim Adjusts the NightWatch panel and meter brightness from min. to max. The antenna warning LED is not affected by this control. -SWR CAL This control is used in conjunction with the S/RF / SWR / CAL switch to calibrate the standing wave ratio circuit to full scale on the display meter in preparation for measuring the standing wave ratio that the antenna is presenting to the transceiver. The standing wave ratio can be checked to insure that maximum power is being radiated for the longest signal range. The antenna must be in good condition, properly adjusted and matched to your transceiver. The SWR function of the display meter lets you easily measure your antenna condition. To operate this function, select a frequency near the middle of the range such as 28.850 MHz or the one you plan to use most. With the power on, set the S/RF / SWR / CAL switch to the CAL position. Press and hold the microphone Press-To-Talk button and, using the SWR CAL knob, adjust the meter to the CAL position indicated on the display meter. Then, while releasing the microphone button, switch the S/RF / SWR / CAL switch to the SWR position. Again press and hold the microphone Press-To-Talk button and read the SWR indicated. Lower figures are the better, with 1 being ideal. Generally, readings up to 3 are acceptable, but a reading greater than 3 indicates that you are losing radiated power and antenna adjustment may be advisable.

28/29 MHz 0/5 kHz

Channel Display
Nothing comes close to a Cobra 13

12 English

Indicators and Microphone
Operating to Receive and Transmit

Indicators

Analog Meter The meter needle swings proportionally to the strength of the incoming signal or RF output power in receive or transmit modes. When used to tune the antenna or monitor the quality of the coaxial cable and RF electrical connections, the needle swings proportionally to the ratio of standing wave ratio and RF output. If there is any degradation in these, due to humidity, salt, spray, vibration or corrosion, the SWR meter reading will rise, thereby indicating that a problem exists. --RX / TX Indicator This indicator glows green when in receive mode and red when in transmit mode. Antenna Warning Indicator This indicator glows red whenever the standing wave ratio is greater than 3 to 1. --

Operating to Receive

To begin operating your radio: 1. Be sure the power source, microphone and antenna are properly connected. 2. Turn the unit on by turning the volume knob clockwise and set the volume for a comfortable listening level. 3. Set the PA / AM / FM switch to the desired AM or FM. 4. Set the RF gain control fully clockwise for maximum RF gain. 5. Listen to the background noise from the speaker, then turn the squelch ring 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 receiver 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. 6. Select the desired frequency with the band and frequency selector knobs. 7. Adjust other controls as desired.
The receive and transmit modes are controlled by the Press-To-Talk (PTT) switch on the microphone. Press the switch to transmit, release it to receive. When transmitting, hold the microphone two inches from the mouth and speak clearly in a normal voice. To substitute for the supplied low-impedance (500 ohm) dynamic microphone, see the alternate microphones and installation section on page 17.

Operating to Transmit

To transmit a signal: 1. Select the desired frequency for transmission if different from the one chosen to receive. 2. Set the microphone gain knob fully clockwise. 3. If the frequency is clear, depress the Press-To-Talk switch on the microphone and speak in a normal voice.

14 English

Maintenance and Government Regulatory Information
Alternate Microphones and Installation

Maintenance

For best results, the user should select a low-impedance dynamic type microphone or a transistorized microphone. Transistorized-type microphones have a low output impedance characteristic. The microphone must be provided with a four-lead cable. The audio conductor and its shielded lead comprise two of the leads. The third lead is for receive control, the fourth is for transmit control. The microphone should provide the functions shown in the schematic below. -4 Wire Mic Cable Mic Cable Lead Grounding Audio Lead Transmit Control Receive Control
The transceiver is specifically designed for the environment encountered in mobile installations. The use of all solid-state circuitry and its light weight result in high reliability. Should a failure occur, however, replace parts only with identical parts. Do not substitute. NOTE If the performance described in the operation sections is not obtained, review the installation instructions to insure that proper procedures were followed. If a problem still exists, refer to the product service section on page 23.
Government Regulatory Information
This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Transmitting using this radio requires an Amateur Radio License. If you live in the United States, visit http://www.fcc.gov or http://www.arrl.org for further licensing information. In Canada, visit http://strategis.ic.gc.ca or http://www.rac.ca/.

Pin Number 3 4

Fig. 1 Cobra microphone schematic
If the microphone to be used is provided with pre-cut leads, they must be revised as follows. 1. Cut leads so that they extend 716" beyond the plastic insulating jacket of the microphone cable (see Fig. 2). 2. All leads should be cut to the same length. Strip the ends of each wire 18" and tin the exposed wire. Before beginning the actual wiring, read carefully the circuit and wiring information provided with the microphone you select. Use the minimum heat required in soldering the connections. Keep the exposed wire lengths to a minimum to avoid shorting when the microphone plug is reassembled.

16 English

Fig. 2 Microphone cable preparation
To wire the microphone cable to the plug provided, proceed as follows: 1. Remove the retaining screw. 2. Unscrew the housing from the pin receptacle body. 3. Loosen the two cable clamp retainer screws. 4. Feed the microphone cable through the housing, knurled ring and washer as shown Fig. 3B. 5. The wires must now be soldered to the pins as indicated in the wiring table. If a vise or clamping tool is available, it should be used to hold the pin receptacle body during the soldering operation so that both hands are free to perform the soldering. If a vise or clamping tool is not available, the pin receptacle body can be held in a stationary position by inserting it into the microphone jack on the front panel. The numbers of the pins of the microphone plug are shown in Fig. 4, as viewed from the back of the plug. Before soldering the wires to the pins, pre-tin the wire receptacle of each pin of the plug. Be sure that the housing and the knurled ring of Fig. 3 are pushed back onto the microphone cable before starting to solder. If the washer is not captive to the pin receptacle body, make sure that it is placed on the threaded portion of the pin receptacle body before soldering. If the microphone jack is used to hold the pin receptacle during soldering operation, best results are obtained when the connections to pins 1 and 3 are made first and then the connections to pins 2 and 4. Use a minimum amount of solder and be careful to prevent excessive solder accumulation on pins, which could cause a short between the pin and the microphone plug housing.
Fig. 3 Microphone plug wiring
Fig. 4 Microphone plug pin numbers viewed from rear of pin receptacle
6. When all soldering connections to the pins of the microphone are complete, push the knurled ring and the housing forward and screw the housing onto the threaded portion of the pin receptacle body. Note the location of the screw clearance hole in the plug housing with respect to the threaded hole in the pin receptacle body. When the housing is completely threaded into the pin receptacle body, a final fraction of a turn either clockwise or counterclockwise may be required to align the screw hole with the threaded hole in the pin receptacle body. When these are aligned, the retaining screw is then screwed into place to secure the housing to the pin receptacle body. 7. The two cable clamp retainer screws should now be tightened to secure the housing to the microphone cord. If the cutting directions have been carefully followed, the cable clamp should secure to the insulation jacket of the microphone cable. 8. Upon completion of the microphone plug wiring, connect and secure the microphone plug in the transceiver.

18 English

ARRL Q Signals
The most commonly used are shown bold. Some have slightly modified meanings in everyday usage. The official list follows. QRA QRG QRH QRI QRJ QRK What is the name of your station? The name of your station is ____. Will you tell me my exact frequency (or that of ____)? Your exact frequency (or that of ____) is ____ kHz. Does my frequency vary? Your frequency varies. How is the tone of my transmission? The tone of your transmission is ____ (1. Good, 2. Variable, 3. Bad). Are you receiving me badly? I cannot receive you. Your signals are too weak. What is the intelligibility of my signals (or those of ____)? The intelligibility of your signals (or those of ____) is ____ (1. Bad, 2. Poor, 3. Fair, 4. Good, 5. Excellent). Are you busy? I am busy (or I am busy with ____). Please do not interfere. Is my transmission being interfered with? Your transmission is being interfered with ____ (1. Nil, 2. Slightly, 3. Moderately, 4. Severely, 5. Extremely).
QSD QSG QSK QSL QSM QSN QSO QSP QST QSU QSV QSW QSX QSY QSZ QTA QTB QTC QTH QTR QTV QTX QUA Is my keying defective? Your keying is defective. Shall I send ____ messages at a time? Send ____ messages at a time. Can you hear me between your signals and if so can I break in on your transmission? I can hear you between my signals; break in on my transmission. Can you acknowledge receipt? I am acknowledging receipt. Shall I repeat the last message which I sent you, or some previous message? Repeat the last message which you sent me (or message(s) number(s) ____). Did you hear me (or ____) on ____ kHz? I did hear you (or ____) on ____ kHz. Can you communicate with ____ direct or by relay? I can communicate with ____ direct (or by relay through ____). Will you relay to ____? I will relay to ____. General call preceding a message addressed to all amateurs and ARRL members. This is in effect CQ ARRL. Shall I send or reply on this frequency (or on ____ kHz)? Send or reply on this frequency (or ____ kHz). Shall I send a series of Vs on this frequency (or on ____ kHz)? Send a series of Vs on this frequency (or on ____ kHz). Will you send on this frequency (or on ____ kHz)? I am going to send on this frequency (or on ____ kHz). Will you listen to ____ on ____ kHz? I am listening to ____ on ____ kHz. Shall I change to transmission on another frequency? Change to transmission on another frequency (or on ____ kHz). Shall I send each word or group more than once? Send each word or group twice (or ____ times). Shall I cancel message number ____? Cancel message number ____. Do you agree with my counting of words? I do not agree with your counting of words. I will repeat the first letter or digit of each word or group. How many messages have you to send? I have ____ messages for you (or for ____). What is your location? My location is ____. What is the correct time? The correct time is ____. Shall I stand guard for you? Stand guard for me. Will you keep your station open for further communication with me? Keep your station open for me. Have you news of ____? I have news of ____.

Nothing comes close to a Cobra 21

QRL QRM

QRN QRO QRP QRQ QRS QRT QRU QRV QRW QRX QRY QRZ QSA
Are you troubled by static? I am troubled by static ____ (1-5 as under QRM). Shall I increase power? Increase power. Shall I decrease power? Decrease power. Shall I send faster? Send faster (____ WPM). Shall I send more slowly? Send more slowly (____ WPM). Shall I stop sending? Stop sending. Have you anything for me? I have nothing for you. Are you ready? I am ready. Shall I inform ____ that you are calling on ____ kHz? Please inform ____ that I am calling on ____ kHz. When will you call me again? I will call you again at ____ (on ____ kHz). What is my turn? Your turn is numbered ____. Who is calling me? You are being called by ____ (on ____ kHz). What is the strength of my signals (or those of ____)? The strength of your signals (or those of ____) is ____. (1. Scarcely perceptible, 2. Weak, 3. Fairly Good, 4. Good, 5. Very Good). Are my signals fading? Your signals are fading.

20 English

Warranty
Warranty and Trademark Acknowledgement

Customer Assistance

Product Service
Limited Two-Year Warranty
For Products Purchased in the U.S.A. Cobra Electronics Corporation warrants that its Cobra radios, and the component parts thereof, will be free of defects in workmanship and materials for a period of two years from the date of first consumer purchase. This warranty may be enforced by the first consumer purchaser, provided that the product is utilized within the U.S.A. Cobra will, without charge, repair or replace, at its option, defective radios, products or component parts, accompanied by proof of the date of first consumer purchase, such as a duplicated copy of a sales receipt. You must pay any initial shipping charges required to ship the product for warranty service, but the return charges will be at Cobras expense, if the product is repaired or replaced under warranty. This warranty gives you specific legal rights, and you may also have other rights which may vary from state to state. Exclusions: This limited warranty does not apply: 1) To any product damaged by accident; 2) In the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs; 3) If the serial number has been altered, defaced or removed; 4) If the owner of the product resides outside the U.S.A. All implied warranties, including warranties of merchantability and fitness for a particular purpose are limited in duration to the length of this warranty. Cobra shall not be liable for any incidental, consequential or other damages; including, without limitation, damages resulting from loss of use or cost of installation. Some states do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations may not apply to you. -For Products Purchased Outside the U.S.A. Please contact your local dealer for warranty information. --

If you have any questions about operation or installing your new Cobra product, or if you are missing parts Please call Cobra first! DO NOT RETURN THIS PRODUCT TO THE STORE! -For Products Purchased in the U.S.A. If your product should require service, please call at 800-638-3680 to obtain a repair authorization number and the address to which to send your radio. This will ensure the fastest turnaround time on your repair. It will be necessary to furnish the following to have the product serviced and returned. 1. For warranty repair include some form of proof-of-purchase, such as a mechanical reproduction or carbon of a sales receipt. If you send the original receipt, it cannot be returned. 2. Send the entire product. 3. Enclose a description of what is happening with the radio. Include a typed or clearly printed name and address of where the radio is to be returned. 4. Pack radio securely to prevent damage in transit. If possible, use the original packing material. 5. Ship prepaid and insured by way of a traceable carrier such as United Parcel Service (UPS) or Priority Mail to avoid loss in transit. 6. If the radio is in warranty, upon receipt of your radio, it will either be repaired or exchanged. Please allow approximately three to four weeks before contacting Cobra for status. If the radio is out of warranty, a letter will automatically be sent informing you of the repair charge or replacement charge. -For Products Purchased in Canada For out of warranty service, ship this product prepaid to: AVS Technologies Inc., 2100 Trans Canada Hwy S., Montreal, Quebec, H9P 2N4. We reserve the right to repair or replace the radio with an equivalent product. Please include the following information: Date of Purchase, Model Number, Dealer Purchased From, Dealer Address, Dealer Phone Number. -For Products Used in Canada Industry Canada Notice Operation is subject to the following two conditions: 1) this device may not cause interference, and 2) this device must accept any interference, including interference that may cause undesired operation of this device. -For Products Purchased Outside the U.S.A. or Canada Please contact your local dealer for product service information.
Trademark Acknowledgement
Cobra, Nothing comes close to a Cobra and the snake design are registered trademarks of Cobra Electronics Corporation, USA. Cobra Electronics Corporation is a trademark of Cobra Electronics Corporation, USA.

22 English

Accessories
Order Form and Optional Accessories

Order Form

4 Pin Premium Noise-Cancelling Microphone
Name Address (No P.O. Boxes) City Telephone Credit Card Number Type: Visa MasterCard Discover Exp. Date State/Province Zip/Postal Code Country

HG M84

$74.95

HG M84W Wood Grain

$74.95 Customer Signature

Dynamic External Speaker

Noise Canceling External Speaker

Amount

Shipping/Handling*

$10.00 or less. $3.00 $10.01-$25.00. $5.50 $25.01-$50.00. $7.50 $50.01-$90.00. $10.50 $90.01-$130.00. $13.50 $130.01-$200.00. $16.50 $200.01+. 10% of purchase *For AK, HI and PR add additional $26.95 for FedEx Next Day or $10.95 for FedEx 2nd Day. Excludes weekend and holiday shipments.

Item #

U.S. Cost Each

HG S100

$21.95

HG S300

$28.95
Tax Table Please allow two to three weeks California. 7.25% for delivery in the U.S. Prices Illinois. 8.75% subject to change without notice. Indiana. 6%
U.S. Subtotal Michigan. 6% Ohio. 6% Wisconsin. 5% (Tax if Applicable) Shipping/Handling

Optional Accessories

You can find quality Cobra products and accessories at your local Cobra dealer, or in the U.S.A., you can order directly from Cobra. Ordering from U.S.A. Call 773-889-3087 for pricing or visit www.cobra.com. For credit card orders, complete and return this order form to fax number 773-622-2269. Or call 773-889-3087 (Press 1 from the main menu) 8:00 a.m. to 6:00 p.m. CT, Monday through Friday. Make check or money order payable to: Cobra Electronics, Attn: Accessories Dept. 6500 West Cortland Street, Chicago, IL 60707 USA To order online, please visit our website: www.cobra.com.
Nothing comes close to a Cobra 25

24 English

COBRA 150GTL EXPORT FREQUENCY CONVERSION
NOTE: Power Must Be Reset To Activate Export Mode!
Do Not Remove (Gov. Freq.) R676 R138 Remove (11M Export Band)

Toshiba

TMP87PP21DF

4.1943 Mhz

COBRA 150GTL-DX

Introduction:

The Cobra 150GLT DX is a 10 Meter Amateur Radio with some unique features not found on other Amateur radios. SMT (Surface Mount Technology) design and other advanced features such as the Mitsubishi Power MOSFETS used in the RF Driver and Final Transmitter circuit give it superiority over other radios in its
class. The Microprocessor Controlled PLL circuit allows the frequency range to extend far beyond many of its competitors. (Export Only!) Channel Display:
The Channel Display has visual indicators for Band Segments, and A Channels

Export Mode:

Export mode consists of 8 Bands divided into 4 switch positions. The 4 Position Band Switch (A Through D) represents two 45 channel frequency blocks for each letter. For example, Position A would start on the lower frequency segment (1 - 40), then continue the next segment above when channel 40 is passed. The channel display will show a small dot on the Left Side indicating that the radio is in the Upper Segment of the 2 bands. The Cobra radios also have continuous coverage of each band by not skipping the A channels between 3, 7, 11, 15, and 19, as other radios do. As the channel selector reaches channel 3, the next channel up will display 3 again with a small dot on the Right Side. This represents channel 3A, which is normally skipped by most radios and only accessable if the radio has a slider control or a 10Khz offset switch. This may be a little confusing for some users, but after using it for a few days it will become normal. The radio has a Ranger type Frequency Counter Plug on the rear panel so a Model FC-347 (or equivalent) frequency display can be used.

Modification:

* * * * Remove the covers and locate the TMP87PP21DF Microprocessor near the front center of the unit. Locate and Remove the surface mount Resistor R138 to the left side of the Microprocessor. Do Not Remove Resistor R676. This controls the Government Frequency range which is Listen Only! Remove Power from the radio by disconnecting the Power leads for 15 seconds to reset the Microprocessor.
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