background image

 

 

 

 

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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. 

 

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. 

 
6.  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. 

 

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. 

 

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 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. 

 

 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 

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Summary of Contents for DX 949

Page 1: ...Printed In Malaysia AT0949011A MIC980508 DX 949 SOLID STATE CITIZENS BAND AM SSB MOBILE TRANSCEIVER OWNER S MANUAL...

Page 2: ...405 MHz Emission AM USB LSB Frequency Control Phase Lock loop PLL Synthesizer Frequency Stability 0 001 Temperature Range 30 C to 50 C Input Voltage 13 8 VDC Antenna Impedance 50 Ohms Speaker Impedan...

Page 3: ...ERENCE Use of a mobile receiver at low signal levels is normally limited by the presence of electrical noise The primary source of noise in automobile installation is from the generator and ignition s...

Page 4: ...nas 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 is obtained 2 Be very careful not to cut too much at o...

Page 5: ...s 5 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 6 RF POWER CONTROL...

Page 6: ...han 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 18 R B LED This lights green when the Roger Beep is on 19 RX TX LED This LED is g...

Page 7: ...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 run...

Page 8: ...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...

Page 9: ...ing 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 Before beginning the actual wiring read carefully the circuit a...

Page 10: ...crew 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 eit...

Page 11: ...e 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 USE CH 9 FOR EMERGENCY MESSA...

Page 12: ...t 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...

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