"user manual"
Contents
1. TABLE OF CONTENTS Ga PAGE CHAPTER 1 PDCCIICALIONS 6 61 06 dveaiwi bide Pe Ghee 2 2 Installation LOCAUOM 04 3 Mounting The Radio 3 Ignition Noise Interference 4 PUNCHING 4 Tuning The Antenna For Optimum SWR 5 External Speaker 40 425404040 003 lt dasaete0u0t sew danas 6 Public Address 62 ice nsudcas ap eu esses 6 CHAPTER 3 Operation Control PURCHONS 7 EEE 7 Rear Panel 10 Solid State Citizens Band 11 Procedure to Receive and Transmit 12 AM Mobile Transceiver Receiving pee Signals 13 Wi th Blue Illumina te d te Alternate Microphone and Installation 15 Maintenance And Adjustment 18 A Few Rules That Should Be Obeyed 19 A A How Your CB Can Serve You 19 OWNERS M NU L Use Channel 9 For Emergency Message Only 20 CHAPTER 1 SPECIFICATIONS GENERAL Model Channels Frequency Range Emission Frequency Control Frequency Stability Temperature Range Input Voltage Antenna Impedance Speaker Impedance S2. 14 15 16 17 18 19 20 Display ON OFF SWITCH When the switch is in the F D OFF position the frequency Display is OFF TONE SWITCH HI MED LO This switch changes the tone quality In LO position bass is increased and in HI position treble is increased CHANNEL DISPLAY The blue illuminated channel display indicates the current selected channel SWR ALERT 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 R B LED This lights green when the Roger Beep is on RX TX LED This LED is green during receive and red during transmit FREQUENCY COUNTER This blue illuminated display indicates the frequency of the selected channel REAR PANEL CONNECTOR FREQUENCY CHART Channel Channel Frequency Channel Channel Frequency 1 26 965 MHz 21 27 215 MHz 2 26 975 MHz 22 27 225 MHz 3 26 985 MHz 23 27 255 MHz a 4 27 005 MHz 24 27235 MHz 5 27 015 MHz 29 27 245 MHz 6 27 025 MHz 26 27 265 MHz 7 27 035 MHz 028 27 275 MHz 1 ANTENNA This antenna jack accepts 50 ohms coaxial cable with a PL 259 8 27 055 MHz 28 27 285 MHz Rene 9 27 065 MHz 29 27 295 MHz 2 POWER This accepts 13 8V DC power cable with built in fuse The power 10 27 075 MHz 30 27 305 MHz cord provided with the radio has a black and red wire The black goes to negative and red goes to positive 11 27 085 MHz 31 27
3. Attention all motorists The weather Bureau advises that the snow tomorrow will accumulate 4 to 6 inches There is a fire in the building on the corner of 6th and Main Streets This is Halloween patrol unit number 3 Everything is quiet here 18 19 kkk KK Galaxy Two Year Warranty This new Galaxy radio is covered by a two year limited warranty Here are the details All of our Galaxy radio model numbers begin with the letters DX and are covered by our Limited Two Year Parts and Labor Warranty Limited means that will repair problems caused by factory defects or normal use at no charge Work performed by qualified technicians which did not cause any damage to the radio will not void the warranty and will be left intact Problems caused by unqualified technicians or operator abuse can also be repaired but there will be a charge The warranty period begins when the radio is first purchased However in the event that the dated sales receipt has been lost or the radio was purchased used our radios are still covered for 26 months from the date of manufacture based on the serial number Our warranty comes with the radio and remains valid even if you sell the radio to someone else Refurbished radios are distinguished from new radios by using the letter R as the first character of the serial number There are no off site Factory Authorized service centers
4. You can t use the transceiver to promote illegal activities You are not allowed to use profanity You may not play music in your transceiver You may not use your transceiver to sell merchandised or professional service HOW YOUR CB CAN SERVE YOU 1 Warn of traffic tie ups ahead Provide weather and road information Provide help fast in event of emergency or breakdown Suggest good spots to eat and sleep Make long trips more interesting and help keep you awake Provide direct contact with your office or home Make friends for you as you travel Provide local information to find your destination Help law enforcement officers by reporting drunk and reckless drivers Bs Lz ae USE CH 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 YES NO YES NO YES NO YES NO YES NO Example Message A tornado sighted six miles north of town This is observation post number 10 No tornado sighted I am out of gas on interstate 95 I am out of gas in my driveway There is a four car collision at Exit 10 on the Beltway send police and ambulance Traffic is moving smoothly on the Beltway Base to Unit 1 the Weather Bureau has just issued a thunder storm warning Bring the sailboat into port
5. 315 MHz 3 PA SP This jack is for PA operation Before operating you must first 12 27 105 MHz 32 27 325 MHz connect a PA speaker 8 ohms 4W to this jack 13 27 115 MHz 33 27 335 MHz 4 EXT SP This jack accepts 4 to 8 ohms 5 watts external speaker When the 14 27 125 MHz 34 27 345 MHz external speaker is connected to this jack the built in speaker will be disabled 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 10 11 PROCEDURE TO RECEIVE AND TRANSMIT A MICROPHONE The receiver and transmitter are controlled by the push to talk switch on the microphone Press the switch and the transmitter is activated release switch to receive When transmitting hold the microphone two inches from the mouth and speak clearly in a normal voice This transceiver comes complete with a low impedance dynamic microphone 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 unit on by running VOL knob clockwise on transceiver 3 Set the VOL for a comfortable listening level 4 Set the PA CB switch to the CB mode 5 Listen to the background noise from the speaker Turn the SQ knob slowly clockwise until the noise just disappears Leave the control at this setting This SQ is now properly adjusted The receiv
6. 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 1s necessary to run a separate ground wire from the unit to good metal electrical ground in the vehicle When installed in a boat the transceiver will not operate at maximum efficiency without a ground plate unless the vessel has a steel hull Before installing the transceiver in a boat consult your dealer for information regarding an adequate grounding system and prevention of electrolysis between fittings in the hull and water TUNING THE ANTENNA FOR OPTIMUM S W R Since there is such a wide variety of base and mobile antennas this section will strictly concern itself to the various types of mobile adjustable antennas Because the antenna length is directly related to the channel frequency it must be tuned to resonate optimally on all channels of the transceiver Channel requires a longer antenna than Channel 40 because it is a lower frequency Due to the various methods of adjusting antennas for proper S W R we have chosen what we think is the optimum method A Antenna with adjustment screws set screws 1 Start with the antenna extended and tighten the set screw lightly enough so that the antenna can be lightly tapped with your finger for easy adjustment 2 Set your transceiver to Channel 20 Press the PTT push to talk switch and tap
7. ckwise 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 which a signal must overcome in order to be heard Only strong signals will be heard at maximum clockwise setting 3 MIC GAIN CONTOR 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 4 GAIN CONTROL This control is used to reduce the gain of the receive amplifier under strong signal conditions 10 11 12 13 DIMMER CONTROL This knob controls the level of brightness for the meter lamp and the channel display Also pushing this knob turns the meter lamp and the display LED s on and off RF POWER CONTROL This control allows the user to adjust RF power output CHANNEL SELECTOR This control is used to select a desired transmit and receive channel FRONT PANEL METER The Front Panel Meter allows the user to monitor signal strength RF output power SWR level and the AM Modulation level TALKBACK CONTROL Pushing this knob turns the Talkback circuit on and off 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 differen
8. d 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 Fig 2 Microphone plug wiring To wire the microphone cable to the plug provided proceed as follows 1 2 Remove the retaining screw Unscrew the housing from the pin receptacle body Loosen the two cable clamp retainer screws Feed the microphone cable through the housing knurled ring and washer as shown Figure 2 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 14 10 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 pi
9. ddress for the return of your radio Be sure to print clearly We appreciate your choosing a Galaxy radio and we will make every effort to get you back on the air as soon as possible Be sure to visit our web site at www GalaxyRadios com 20 Printed in Malaysia AT0949010V
10. er will remain quiet until a signal is actually received Do not advance the control too far or some of weaker signals will not be heard 6 Set the CHANNEL selector switch to the desired channel 7 Set the RF GAIN control fully clockwise for maximum receive gain C RF POWER CONTROL This feature allows for the adjustment of the RF power output continuously over the range of 1 to 4 watts in AM D PROCEDURE TO TRANSMIT 1 Select the desired channel of transmission 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 12 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 schematic below 4 WIRE MIC CABLE Pin Number Mic Cable Lead 1 Audio Shield 2 Audio Lead 3 Transmit Control 4 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 1 Cut leads so that they extend 7 16 beyon
11. for Galaxy DX models All warranty work must be done at our facility For maximum convenience these radios may be shipped directly to us for repair after obtaining a Repair Authorization Number RAN This RAN may be obtained from our website or by calling our Service Department at 760 480 8800 between 10 00 AM and 4 00 PM Pacific Time The 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 When you send your radio please include a copy of the sales receipt and a note with a detailed description of the symptoms especially if they are intermittent This will help our technicians locate the problem so we don t waste time sending the radio back and forth If possible please include a daytime phone number in case our technicians have any questions Do not send your bracket power cord or microphone unless we ask you for these items during our phone conversation You are responsible for getting the radio safely to us We suggest using United Parcel Service UPS 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 a
12. ith mounting bracket in the exact location desired If nothing will interfere with mounting it in the desired position remove the mounting bolts Before drilling the holes make sure nothing will interfere with the installation of the mounting bolts 2 Connect the antenna cable plug to the standard receptacle on the rear panel Most transceiver antennas are terminated with a type PL 259 plug and mate with the ANT receptacle 3 Connect the red DC power input wire with the fuse to 13 8V DC This wire extends from the rear panel In automobile installation 13 8V DC is usually obtained from the accessory contact on the ignition switch This prevent the set being left on accidentally when the driver leaves the car and also permits operating the unit without the engine running Locate the accessory contact on most ignition switches by tracing the power wire from the AM broadcast receiver in the car 4 Connect the black lead to 13 8 DC This is usually the chassis of the Any convenient location with good electrical contact remove paint may be used 5 Mount the microphone bracket on the right side of the transceiver or near the transceiver using two screws supplied When mounting in an automobile place the bracket under the dash so that microphone is readily accessible IGNITION NOISE INTERFERENCE Use of a mobile receiver at low signal levels is normally limited by the presence of electrical noise The primary source of noi
13. ize Weight TRANSMITTER RF Power Output Frequency Response Frequency Tolerance Spurious Emission Unwanted Sideband RECEIVER Sensitivity for 10 dB S N N Squelch Sensitivity Audio Power Output Image Rejection Ratio AGC Figure of Merit Audio Response Clarifier Range DX 939 40 26 965 27 405 MHz AM Phase Lock loop PLL Synthesizer 0 001 30 C to 50 C 13 8 VDC 50 Ohms 8 Ohms 7 7 8 W x 9 1 4 D x 2 1 8 H 5 5 Ibs AM 4W 300 to 2500 Hz 0 005 Better Than 55 dB Better Than 55 dB 0 5 uV Less Than 0 5 uV 2W 10 Distortion 65 dB 100 mV for 10dB Change in Audio Output 300 to 2500 Hz 1 0 KHz SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE CHAPTER 2 INSTALLATION LOCATION Plan the location of the transceiver and microphone bracket before starting the installation Select a location that is convenient for operation and does not interfere with the driver or passengers In automobiles the transceiver is usually mounted the dash panel with the microphone bracket beside it MOUNTING THE RADIO The transceiver 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 the vehicle Proceed as follows to mount the transceiver 1 After you have determined the most convenient location in your vehicle hold the transceiver w
14. ns pre tin the wire receptacle of each pin of the plug NO Fig 3 Microphone plug pin numbers viewed from rear of pin receptacle 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 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 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 b
15. od Stay away from large metal objects when adjusting metal telephone or lamp post fences etc NOTE The transceiver will operate into an SWR of 2 to 1 indefinitely and sustain an SWR of 20 1 for a maximum of 5 minutes at rated operating conditions 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 PUBLIC ADDRESS To use the transceiver as a public address system connect an external 8 ohms speaker 4 watts minimum to the PA SP jack located on the rear panel Direct speaker away from the microphone to prevent acoustic feedback Physical separation or isolation of the microphone and speaker 15 important when operating the PA at high output levels CHAPTER 3 OPERATION CONTROL FUNCTIONS FRONT PANEL YOY OG 20 44 15 06 09 UERN NS 6 GA RF Oe 5 5 OO O 1 ON OFF VOLUME CONTROL Turn clockwise to apply power to the radio and to set the desired listening level 2 SQUELCH CONTROL This control is used to control 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 is eliminated Turn fully counter clo
16. ody 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 Upon completion of the microphone plug wiring connect and secure the microphone plug in the transceiver 15 MAINTENANCE AND ADJUSTMENT This 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 and MAINTENANCE AND ADJUSTMENT sections 15 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 16 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 You are not allowed to blast others off the air by over powering them with illegally amplified transmitter power or illegally high antennas
17. se in automobile installation is from the generator and ignition system in the vehicle Under most operating conditions when signal level is adequate the background noise does not present a serious problem Also when extremely low level signals are being received the transceiver may be operated with vehicle engine turned off The unit requires very little current and therefore will not significantly discharge the vehicle battery Even though the transceiver has ANL and NB controls in some installations ignition interference may be high enough to make good communications impossible The electrical noise may come from several sources Many possibilities exist as variations between vehicles require different solutions to reduce the noise ANTENNA 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 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 purpose however the radiation pattern is nondirectional The slight directional characteristic will be observed only at extreme distances
18. t microphones CLARIFIER Allows tuning of the receive frequency above or below the channel frequency by up to 1 0 KHz 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 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 When this switch is in PWR position the meter indicates your power output NB ANL OFF SWITCH In the ANL position the Automatic Noise Limiter is activated In the NB ANL position the Noise Blanker is also activated The Noise Blanker 15 very effective in eliminating repetitive impulse noise such as ignition interference PA CB RB SWITCH In the PA position your voice will come out of the speaker that you need to plug in to the PA SP jack on the back of the radio The radio does not operate when you are in the PA mode The CB mode is normal operation of the radio In the RB mode you are in CB operation but the Roger Beep is engaged When the Roger Beep is on the radio transmits an audio tone at the end of your transmission This indicates the end of your transmission so that people who are having trouble hearing you will know that you are done speaking As a courtesy to others use the Roger Beep only when necessary
19. the antenna making it shorter The S W R meter will show a lower reading each time the antenna is tapped By continuing to shorten the antenna you will notice the S W R reading will reach a low point and then start rising again This means that you have passed the optimum point for Channel 20 Extend the antenna a short distance and again follow the procedure above When the lowest point has been reached switch to Channel and then to Channel 40 and compare S W R readings They should be almost equal NOTE The proper setting is achieved when the SWR is 1 5 or below and when it has the same reading for channels 1 and 40 B Antennas which must be cut to proper length 1 Follow the same procedure as above but adjust the length by cutting in 1 8 increments until a good match 15 obtained 2 very careful not to cut too much at one time as once it is cut it longer be lengthened 3 whip is easily cut by filing a notch all the way around and breaking the piece off with pliers If you re having difficulties in adjusting your antenna check the following a All doors must be closed when adjusting the antenna b Make sure the antenna base is grounded c Check your coaxial cable routing it may be pinched when routed into the car d Try a different location in your car keeping in mind the radiation pattern you wish 15 the antenna perfectly vertical f Try a different location in your neighborho
Download Pdf Manuals
Related Search