Ranger Electronic DX-979 CB Transceiver - TX User Manual User Instructions
Ranger Electronic (Shanghai) Inc CB Transceiver - TX User Instructions
users manual
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| Document ID | 317222 |
| Application ID | NmM0QyvZ9KTck6I1k16X+g== |
| Document Description | users manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 27.95kB (349361 bits) |
| Date Submitted | 2003-04-10 00:00:00 |
| Date Available | 2003-04-08 00:00:00 |
| Creation Date | 2003-03-25 09:53:26 |
| Producing Software | Acrobat PDFWriter 4.05 for Windows NT |
| Document Lastmod | 0000-00-00 00:00:00 |
| Document Title | User Instructions.PDF |
| Document Creator | User Instructions.doc - Microsoft Word |
| Document Author: | summer |
TABLE OF CONTENTS PAGE CHAPTER 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DX 979 TALKBACK CLARIFIER SWR 9 +20 5 7 +40 d +6 60 40 20 MOD PWR SWR 1 5 2 2 1 AX NB/ ANL USB CHAPTER 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing The Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ignition Noise Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . External Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Public Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RX/ TX MOD OFF CB PWR VOL SQ MIC AM PA LSB SWR RF DIM PWR CHAPTER 3 DX 979 OFF AM/ SSB Two Way Citizen Band Mobile Transceiver With StarLite Face Plate Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Procedure to Receive and Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Receiving SSB Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Alternate Microphone and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Maintenance And Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 A Few Rules That Should Be Obeyed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 How Your CB Can Serve You . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Use Channel 9 For Emergency Message Only . . . . . . . . . . . . . . . . . . . . . . 18 OWNER’S MANUAL -1- CHAPTER 1 SPECIFICATIONS GENERAL Model Frequency Range Emission Frequency Control Frequency Stability Temperature Range Antenna Impedance Antenna Connectors Input Voltage Size Weight CHAPTER 2 INSTALLATION INSTALLING THE RADIO DX 979 26.965 ~ 27.405 MHz AM/USB/LSB Phase-Lock-Loop (PLL) Synthesizer 0.001% -30°C to +50°C 50 Ohms Standard SO-239 type 13.8V DC 7 3/8” (W) x 8 3/4” (D) x 2 1/4” (H) 4.2 lbs. Choose a convenient location for operation that does not interfere with driver or passenger. This 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 grounding connection to the chassis of vehicle. Proceed as follows to install the radio. 1. Locate a convenient area in your vehicle for the installation of the radio. Hold the mounting bracket with the radio in the location where the radio is to be installed. Make sure nothing will interfere with either the radio or the mounting bolts. Mark and then drill holes for the mounting bracket. 2. Most radio antennas come equipped with a PL-259 plug. Connect this plug to the ANT. Jack in the rear of the radio. 3. Extending from the rear of the radio is a fused red and black wire for the DC connections to the vehicle’s electrical system. For best performance, it is strongly recommended that the red lead be taken directly to the positive terminal on the vehicle’s battery and the black lead be connected to the nearest chassis ground. (Note: This radio is designed for vehicles with negative ground systems.) TRANSMITTER RF Power Output Spurious Emission Unwanted Sideband Audio Distortion Frequency Response Microphone AM: 4W ; USB/LS B: 11W PEP > -60 dB -50 dB 10% 300 to 2500 Hz Dynamic Connections should be made using appropriate “crimp on” lugs of a size large enough to make good contact with the bolt used to fasten to the battery and the chassis ground. It is a good safety idea to install a second fuse that would provide protection in case the red wire was to “fray” or get pinched and short to the body of the vehicle, somewhere between the battery and the radio. RECEIVER Sensitivity for 10 dB (S+N)/N Squelch Sensitivity Selectivity Image Rejection Hum & Noise AGC Figure of Merit Audio Power Output Audio Response AM: < 0.5 uV ; USB/LSB: < 0.25 uV < 0.5 uV > -50 dB > 60 dB > -40 dB 80 dB for 50 mV for 10 dB Change in Audio Output 2.5W @ 10% Distortion 300 to 2500 Hz High power radios such as this one require large DC current flow when in the TX mode. Poor power connections cause supply voltage drops that can substantially decrease the performance of your radio. A good DC connection is probably one of the most important things for getting the best transmitter performance and in some cases, least receiver noise. 4. Mount the microphone bracket near the radio in an easily accessible spot using the two screws provided. (SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE) -2- -3- IGNITION NOISE INTERFERENCE With weak signals, you may experience interference of the signal by background noise. This radio has NB and ANL circuits which will help reduce background noise from sources such as your ignition system. However, background electrical noise may come from several sources and all noise may not be eliminated. With extremely weak signals, you can operate this radio with the engine turned off, which should improve reception. If the ignition noise level is too high to allow proper operation under most conditions, you should have your installation of the radio checked by a qualified technician. CHAPTER 3 OPERATION CONTROL FUNCTIONS FRONT PANEL 11 ANTENNA TALKBACK This radio has a jack in the rear for a standard PL-259 antenna plug. If you are looking for the most range for your transmission, use a vertically polarized, quarterwave length antenna. If antenna height is a problem, you may use a shorter, loadedtype whip antenna although you can expect some loss of transmission range. To improve performance, your antenna should be matched to your radio. Your antenna can be adjusted so that it matches your radio. 4 1 5 1 6 1 7 1 CLARIFIER SWR 7 9 +20 +40 dB 60 40 60 20 MOD PWR 0 5 2 SWR 1 2 1 AX OFF CB PWR VOL DX 979 NB/ ANL USB RX/ TX MOD SQ MIC AM PA LSB SWR RF D IM PW R OFF EXTERNAL SPEAKER The external speaker jack (EXT SP.) 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 4 watts. When the external speaker is plugged in, the internal speaker is disconnected. 1 2 3 4 5 7 8 1. MICROPHONE JACK: Used to connect microphone for voice source. PUBLIC ADDRESS To use the Public Address (PA) function, first connect an external speaker to the PA. SP. Jack on the rear of the radio. See the above specifications for a proper external speaker. Keep the speaker away from the microphone to avoid acoustic feedback. 2. SQUELCH CONTROL: This knob is used to eliminate background noise being heard through the receiver, which can be disturbing when no transmissions are being heard through the receiver. To use this feature, turn the knob fully counterclockwise and then turn clockwise slowly until the background noise is just eliminated. Further clockwise rotation will increase the threshold level which a signal must overcome in order to be heard. Only strong signals will be heard at a maximum clockwise setting. 3. ON/OFF VOLUME CONTROL: This knob controls the volume and power to the radio. To turn radio on, rotate the knob clockwise. Turning the knob further will increase the volume of the receiver. 4. RF GAIN CONTROL: This control is used to reduce the gain of the RF amplifier under strong signal conditions. -4- -5- 5. MIC GAIN CONTROL: 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. 6. RF POWER CONTROL: This control allows the user to adjust RF power output. 7. DIMMER CONTROL: This knob controls the level of brightness for the meter lamp and channel display. 15. NB-ANL/CB/PA SWITCH: When the switch is in the NB/ANL position, the Noise Blanker (NB) and Automatic Noise Limiter (ANL) circuits are activated. The Noise Blanker is very effective in eliminating repetitive impulse noise such as ignition interference. In the CB position, the PA function is disabled and the radio will transmit and receive on the speaker that is connected. In the PA position, the radio acts as public address amplifier. Your voice will come out of the speaker that is plugged into the PA. SP. jack on the rear panel. The radio does not operate when you are in the PA mode. 16. MODE SWITCH: This control allows you to select one of the following operating modes: AM/USB/LSB. 8. SWR LED: This LED lights red when your SWR is higher than about 3:1. This is not an exact indicator of 3:1 SWR, but it is an indication that you should check your SWR reading. 17. RX/TX LED: The red LED indicates the unit is in the transmit mode. The green LED indicates the unit is in the receive mode. 9. CHANNEL SELECTOR: This control is used to select the desired transmit and receive channel. 18. CHANNEL DISPLAY: The channel display indicates the current selected channel. 10. FRONT PANEL METER: The front panel meter allows the user to monitor signal strength, RF output power, SWR level and AM modulation level. 11. ILLUMINATED FACE PLATE: All faceplate lettering will fully illuminate to allow the user easy viewing at night. This unique, solid state, backlight is designed to maximize night vision while minimizing eye fatigue. Therefore, it is ideal for switch and control recognition day or night. 12. TALKBACK (TB) CONTROL: Adjust this knob for desired volume of Talkback. This is used to monitor your own voice. For example, you could use this feature to compare different microphones. 13. CLARIFIER CONTROL: Allows tuning of the receive frequency above or below the channel frequency by up to 1.0KHz. Although this control is intended primarily to tune in SSB signals, it may be used to optimize AM signals. 14. SWR/MOD/PWR SWITCH: This switch controls the function of the meter during the transmit mode. In the “SWR” position, the meter indicates the Standing Wave Ratio (SWR) of your antenna. There are no adjustments because the SWR circuit in this radio calibrates itself automatically. When the switch is in the “MOD” position, the green scale on the meter indicates your percentage of modulation in the AM mode only. It is most accurate when testing at maximum power output. When this switch is in “PWR” position, the meter indicates your power output. -6- -7- REAR PANEL FREQUENCY CHART PA SP. Channel Frequency Channel Channel Frequency 26.965 MHz 21 27.215 MHz 26.975 MHz 22 27.225 MHz 26.985 MHz 23 27.255 MHz 27.005 MHz 24 27.235 MHz 27.015 MHz 25 27.245 MHz 27.025 MHz 26 27.265 MHz 27.035 MHz 27 27.275 MHz 27.055 MHz 28 27.285 MHz 27.065 MHz 29 27.295 MHz 10 27.075 MHz 30 27.305 MHz 11 27.085 MHz 31 27.315 MHz 12 27.105 MHz 32 27.325 MHz 13 27.115 MHz 33 27.335 MHz 14 27.125 MHz 34 27.345 MHz 15 27.135 MHz 35 27.355 MHz 16 27.155 MHz 36 27.365 MHz 17 27.165 MHz 37 27.375 MHz 18 27.175 MHz 38 27.385 MHz 19 27.185 MHz 39 27.395 MHz 20 27.205 MHz 40 27.405 MHz EXT SP. ANT FCC ID : MODEL : SERIAL NO. Channel F.C. - DC 13.8V + This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. MADE IN CHINA 1. ANTENNA: This jack accepts a 50 ohm coaxial cable with a PL-259 type plug. 2. DC POWER: This jack accepts the 13.8V DC power cable with built-in fuse. The power cord provided with the radio has a black and red wire. The black goes to negative and red goes to positive. 3. PA SP: This jack is for PA operation. Before operating, you must first connect a PA speaker (8 ohms, 4W) to this jack. 4. EXT. SP: This jack accepts a 4 to 8 ohm, 5 watt external speaker. When the external speaker is connected to this jack, the built-in speaker will be disabled. -8- -9-6- PROCEDURE TO RECEIVE AND TRANSMIT RECEIVING SSB SIGNALS A. MICROPHONE The push-to-talk switch on the microphone controls the receiver and transmitter. Press the switch and the transmitter is activated, release switch to receive. When transmitting, hold the microphone two inches from your mouth and speak clearly in a normal voice. This transceiver comes complete with a low impedance dynamic microphone. There are three types of signals presently used for communications in the Citizen Band: AM, USB and LSB. When the MODE switch on your unit is placed in the AM position, only standard double-side band, full carrier signals will be detected. An SSB signal may be recognized while in the AM mode by its characteristic "Donald Duck" sound and the inability of the detector to produce an intelligible output. The USB and LSB modes will detect upper side band and lower side band respectively, and standard AM signals. B. PROCEDURE TO RECEIVE 1. Be sure that power source, microphone and antenna are connected to the proper connectors before going to the next step. 2. Turn VOL knob clockwise to apply power to the radio. 3. Set the VOL for a comfortable listening level. 4. Set the MODE switch to the desired mode. 5. Listen to the background noise from the speaker. Turn the SQ knob slowly clockwise until the noise just disappears. The SQ 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. Set the CHANNEL selector switch to the desired channel. 7. Adjust CLARIFIER control to clarify the SSB signals or to optimize AM signals. C. PROCEDURE TO TRANSMIT 1. Select the desired channel of operation. 2. Set the MIC GAIN control fully clockwise. 3. If the channel is clear, depress the push-to-talk switch on the microphone and speak in a normal voice. - 10 - SSB reception differs from standard AM reception in that an SSB receiver does not require a carrier or opposite side band to produce an intelligible signal. A single-side band transmitted signal consists only of the upper or the lower side band and no carrier is transmitted. The elimination of the carrier from the AM signal helps to eliminate the biggest cause of whistles and tones heard on channels which make even moderately strong AM signals unreadable. Also, SSB takes only half the space of an AM channel, therefore two SSB conversations will fit into each channel, expanding the 40 AM channels to 80 SSB channels. The reduction in channel space required also helps in the receiver because only half of the noise and interference can be received with 100% of the SSB signal. An SSB signal may be received only when the listening receiver is functioning in the same mode. In other words, an upper side band signal (USB) may be made intelligible only if the receiver is functioning in the USB position. If a lower side band (LSB) signal is heard when the receiver is in the USB mode, no amount of tuning will make the signal intelligible. The reason for this may be understood if you consider that when the modulation is applied to the transmitter's microphone in the USB mode, the transmitter output frequency is increased whereas in the LSB mode the transmitter's output frequency is decreased. The result in listening to the receiver is that when the MODE switch is in the proper position (either USB or LSB), a true reproduction of a single tone of modulation will result, and if the tone is increased in frequency (such as a low-pitched whistle or a high-pitched whistle) you will hear the increase in the output tone of the receiver. If the incorrect mode is selected, an increase in tone of a whistle applied to the transmitter will cause a decrease in the resultant tone from the receiver. - 11 - Thus when a voice is used in place of a whistle or tone, in the proper listening mode the voice will be received correctly whereas in the incorrect mode, the voice will be translated backwards and cannot be made intelligible by the CLARIFIER control. When listening to an AM transmission, a correct side band is heard in either mode since both upper and lower side bands are received. Once the desired SSB mode has been selected, frequency adjustment may be necessary in order to make the incoming signal intelligible. The CLARIFIER control allows the operator to vary frequency above or below the exact frequency of the channel. If the sound of the incoming signal is high or low pitched, adjust the operation of the CLARIFIER. ALTERNATE MICROPHONES AND INSTALLATION For best results, the user should select a low-impedance dynamic type microphone or a transistorized microphone. Transistorized type microphones have low output impedance characteristics. The microphones 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 transmit control and fourth is for receiving control. The microphone should provide the functions shown in the schematic below. 4 WIRE MIC CABLE Consider it as performing the same function as a phonograph speed control. When the speed is set too high, voices will be high-pitched and if set too low, voice will be low-pitched. Also, there is only one correct speed that will make a particular record produce the same sound that was recorded. If the record is played on a turntable that is rotated in the wrong direction (opposite side band) no amount of speed control (CLARIFIER) will produce an intelligible sound. Pin Number An AM signal received while listening in one of the SSB modes will produce a steady tone (carrier) in addition to the intelligence, unless the SSB receiver is tuned to exactly the same frequency by the CLARIFIER control. For simplicity, it is recommended that the AM modes be used to listen to AM signals. Mic Cable Lead Audio Shield Audio Lead Transmit Control Receive Control Fig. 1 Your transceiver microphone schematic. If the microphone to be used is provided with pre-cut leads, they must be revised as follows. - 12 - 1. Cut leads so that they extend 7/16" beyond the plastic insulating jacket of the microphone cable. 2. All leads should be cut to the same length. Strip the ends of each wire 1/8" and tin the exposed wire. - 13 - 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. 5. The wires must now be soldered to the pins as indicated in the above wiring tables. 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 microphone plug are shown in Fig. 3, as viewed from the back of the plug. Before soldering the wire to the pins, pre-tin the wire receptacle of each pin of the plug. Fig. 3 Microphone plug pin numbers viewed from rear of pin receptacle. Fig. 2 Microphone plug wiring 6. Be sure that the housing and the knurled ring of Figure 2 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. 7. If the microphone jack is used to hold the pin receptacle during soldering operation, best results are obtained when the connections to pin 1 and 3 are made first and then the connections to pins 2 and 4. Use a minimum amount of soldering and be careful to prevent excessive solder accumulation on pins, which could cause a short between the pin and the microphone plug housing. 8. When all soldering connections to the pins of the microphone are completed, 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. 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 Figure 2. - 14 - - 15 - 9. 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. A FEW RULES THAT SHOULD BE OBEYED 1. You are not allowed to carry on a conversation with another station for more than five minutes at a time without taking a one-minute break, to give others a chance to use the channel. 10. Upon completion of the microphone plug wiring, connect and secure the microphone plug in the transceiver. 2. You are not allowed to blast others off the air by over-powering them with illegally amplified transmitter power, or illegally high antennas. MAINTENANCE AND ADJUSTMENT 3. You can’t use the transceiver to promote illegal activities. This transceiver is specifically designed for the environment encountered in base 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. 4. You are not allowed to use profanity. 5. You may not play music in your transceiver. 6. You may not use your transceiver to sell merchandised or professional service. NOTE If the performance described in the OPERATION and MAINTENANCE AND ADJUSTMENT sections is not obtained, review the operating instructions to insure that proper procedures were followed. FCC WARNING All transmitter adjustments other than those provided on front panel by the manufacturer must be made by or under the supervision of the holder of an FCC – issued general radio telephone operator’s license. HOW YOUR CB CAN SERVE YOU 1. Warn of traffic tie ups ahead. 2. Provide weather and road information. 3. Provide help fast in event of emergency or breakdown. 4. Suggest good spots to eat and sleep. 5. Make long trips more interesting, and help keep you awake . 6. Provide direct contact with your office or home. 7. Make friends for you as you travel. 8. Provide “local information” to find your destination. 9. Help law enforcement officers by reporting drunk and reckless drivers. - 16 - - 17 - 14 - USE CHANNEL 9 FOR EMERGENCY MESSAGES ONLY The FCC gives the following examples of permitted and prohibited types of communications for use in an emergency. These are guidelines and are not intended to be all inclusive. Permitted Example Message YES “A tornado sighted six miles north of town. NO “This is observation post number 10. No tornado sighted. YES “I am out of gas on interstate 95” NO “I am out of gas in my driveway” YES “There is a four-car collusion at exit 10 on the Beltway, send police and ambulance.” NO “traffic is moving smoothly on the Beltway” YES “Base to Unit 1, the weather Bureau has just issued a thunder storm warning. Bring the sailboat into port.” NO “Attention all motorists. The weather Bureau advises that the snow tomorrow will accumulate 4 to 6 inches. YES “There is a fire in the building on the corner of 6th and Main Streets.” NO “This is Halloween patrol unit number 3. Everything is quiet here.” - 18 - MEMO MEMO MEMO WARRANTY This radio is covered by a two year Limited parts and labor warranty. “Limited” means that we will repair problems caused by factory defects or normal use at no charge. Before returning a radio to us for warranty service, please call our Service Department for a Repair Authorization Number (RAN). This RAN must be written below your return address on the outside of the shipping box. Boxes, which arrive without an RAN, will be refused, and the shipping company will return the unopened box to you. Be sure to have a pen and paper ready along with the serial number of your radio before calling. We will give you the RAN and our shipping address over the phone. The telephone number of the Service Department is (760) 480-8800, and we suggest calling between 10:00 AM and 4:00 PM Pacific Time. Please include a note with a detailed description of the symptoms. This is important because it will help the technician who works on your radio to locate your problem. Intermittent problems are easily overlooked, so be sure to give as much detail as possible in your note. Also, please include your daytime telephone number in case our technicians have any additional questions. Do not send your power cord or microphone unless we ask for these items during our telephone conversation. You are responsible for getting the radio safely to us. (We suggest using United Parcel Service.) You must pay to ship the radio to us, and we will pay to ship the radio back to you. Since we use UPS and they do not ship to Post Offices boxes, please provide us with a street address for the return of your radio. We will repair and return your radio as soon as we can. We appreciate your choosing a Galaxy radio and we want you to be on the air as much as possible! Be sure to visit our web site at www.GalaxyRadios.com Printed in Taiwan AT
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