Owner`s Manual
Contents
1. conditions you should have your installation of the radio checked by a qualified technician ANTENNA 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 quarter wave length antenna If antenna height is a problem you may use a shorter loaded type 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 1t matches your radio 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 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 CHAPTER 3 OPERATION CONTROL FUNCTIONS FRONT PANEL ae 8 de n1213 1415 TALKBACK gt lt NB ANL a NY 1 CN FN rom I INN ff Y N wu WY WY z CB OFF IN 1 J Jj A 1 MICROPHONE JACK Used to connect microphone2. for voice source 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 19 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 MIC GAIN CONTROLE Adjusts the microphone gain in the transmit and PA modes This controls the gain to the extent that full talk power 1s available several inches away from the microphone In the Public Address PA mode the control functions as the volume control 5 POWER CONTROLE This control allows the user to adjust RF power output 2E 10 11 12 13 14 15 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 CHANNEL SELECTOR This control is used to select the desired transmit and receive channel FRONT PANEL METER The front panel meter allows the user to monitor incoming signal strength R
3. of each wire 1 8 and tin the exposed wire 10 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 KNURLED RING n ya Fig 2 Microphone plug wiring To wire the microphone cable to the plug provided proceed as follows l 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 11 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 re
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5. F output power SWR level and AM modulation level RF GAIN CONTROL This control is used to reduce the gain of the RF receive amplifier under strong signal conditions DIMMER CONTROL This knob controls the level of brightness for the meter lamp and channel display 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 They are most accurate when testing at maximum power output When this switch is in PWR position the meter indicates your power output 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 TALKBACK SWITCH This feature is used to monito
6. Ga l k X TABLE OF CONTENTS alaxy nn CHAPTER 1 D X O Specifications ooooooooooooooooorrrrrrrroooooos 2 CHAPTER 2 Incip MC 3 Installing The Radio x ouo som mae mm aea de 3 Ignition Noise Interference llle 4 Du DD A NE 4 Ext mal Speaker sectorial SA Ud PES RE BU Sx 4 PODU C AUOTOS 2 22 20 oe 0 90 1 920198 onde a 4 CHAPTER 3 Operation e cee Soh Se Pe oe Se Oe SR ee eee 5 Front Pagel A E 5 Rear Panel AA E AC ORTU AE EE E E EE aT 7 Fiegueney Cia serer 52 40 n 8 Procedure to Receive and Transmit 0 eee eee eee eee 9 Alternate Microphone and Installation o oooooooooo o oo 10 Maintenance And Adjustment 0 0 cc cece ees 13 A Few Rules That Should Be Obeyed 0 00000 14 Gtzens Banc Mobile Transceiver How Your CB Can Serve YOU 14 Use Channel 9 For Emergency Message Only 15 OWNERS MANUAL CHAPTER 1 SPECIFICATIONS GENERAL Model Channels Frequency Range Emission Frequency Control Frequency Stability Temperature Range Antenna Impedance Antenna Connectors Input Voltage Size Weight TRANSMITTER RF Power Output Spurious Emission Unwanted Sideband Audio Distortion Frequency Response Microphone RECEIVER Sensitivity for 10 dB S N N Squelch Sensitivity Selectivity Image Rejection Hum amp Noise AGC Figure of Merit Audio Power Output Audio Response DX 919 40 26 965 27 405 MHz AM Phase Lock L
7. ar 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 body 12 10 The two cable clamp retainer screws should now be tightened to secure the housing to the microphone cor
8. d 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 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 section 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 13 A FEW RULES THAT SHOULD BE OBEYED l 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 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 n
9. he 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 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 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 19 for transmit control and fourth is for receiving control The microphone should provide the functions shown in the 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 l 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
10. in Streets Ihis is Halloween patrol unit number 3 Everything is quiet here 2 15 MEMO MEMO MEMO MEMO Galaxy Two Year Warranty This new Galaxy radio is covered by a two year limited warranty Here are the details e All of our Galaxy radio model numbers begin with the letters DX and are covered by our Limited Two Year Parts and Labor Warranty e Limited means that we 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 e 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 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 Authorizatio
11. n 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 address 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
12. oop PLL Synthesizer 0 001 30 C to 50 C 50 Ohms Standard SO 239 type 13 8V DC 71 4 W x 9 D x 2 1 4 H 3 4 lbs AM 4 watts gt 60 dB 50 dB lt 5 300 to 2500 Hz Dynamic lt 0 5 uV lt 0 5 uV gt 50 dB gt 60 dB gt 40 dB 50 mV for 10 dB Change in Audio Output 2 5W 10 Distortion 300 to 2500 Hz SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE E m CHAPTER 2 INSTALLATION INSTALLING THE RADIO Choose a convenient location for operation that does not interfere with driver or passenger This radio 1s 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 l 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 p
13. ositive 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 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 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 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
14. ot use your transceiver to sell merchandise or professional services HOW YOUR CB CAN SERVE YOU 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 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 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 am out of gas in my driveway There 1s a four car collusion 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 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 Ma
15. provided to the FC347 through this jack FREQUENCY CHART Channel Channel Frequency l 26 965 MHz 2 26 975 MHz 3 26 985 MHz 4 27 005 MHz 5 27 015 MHz 6 27 025 MHz 7 27 035 MHz 8 27 055 MHz 9 27 065 MHz 10 27 075 MHz 11 27 085 MHz 12 27 105 MHz 13 27 115 MHz 14 27 125 MHz 15 27 135 MHz 16 27 155 MHz 17 27 165 MHz 18 27 175 MHz 19 27 185 MHz 20 27 205 MHz Channel 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Channel Frequency 27 215 MHz 27 225 MHz 27 255 MHz 27 235 MHz 27 245 MHz 27 265 MHz 27 275 MHz 27 285 MHz 27 295 MHz 27 305 MHz 27 315 MHz 27 325 MHz 27 335 MHz 27 345 MHz 27 355 MHz 27 365 MHz 27 375 MHz 27 385 MHz 27 395 MHz 27 405 MHz PROCEDURE TO RECEIVE AND TRANSMIT A MICROPHONE The push to talk switch on the microphone controls the receiver and transmitter Press the switch and the transmitter s 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 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 t
16. r your own voice For example you could use this feature to compare different microphones HI is high volume LO is low volume The Talkback circuit is off when the switch is in the OFF position RX TX LED This LED is green during receive and red during transmit CHANNEL DISPLAY The channel display indicates the current selected channel ae REAR PANEL NS P N R This device complies with part 15 ofthe FCC Rules Operation is subject to the condition that this device does not cause harmful interference Service Manual at www GalaxyRadios com AS FR MN e rn X Y SA N L sierra MODEL NO DX 919 NS Y DC 13 8V D AM 40 CH CB TRANSCEIVER DATE OF MFG SERIAL NO ANTENNA This jack accepts a 50 ohm coaxial cable with a PL 259 type plug 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 PA SP This jack is for PA operation Before operating you must first connect a PA speaker 8 ohms 4W to this jack 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 F C This jack is used to connect the optional Galaxy FC347 six digit frequency counter All connections including DC power are
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