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RECEIVER 

 

Sensitivity 

AM: 0.5 

µ

V for 10 dB (S+N)/N at greater 

than ½ -watt of audio output. 

 

FM: 1.0 

µ

V for 20 dB (S+N)/N at greater 

than ½-watt of audio output. 

Selectivity 

AM/FM: 6 dB @ 3 KHz, 50 dB @ 9 KHz. 

Image Rejection 

More than 65 dB. 

IF Frequency 

AM/FM: 10.695 MHz 1

st

 IF, 455 KHz 2

nd

 IF   

Adjacent-Channel 
Rejection 

60 dB AM 

RF 

Gain 

Control 

45 dB adjustable for optimum signal 
reception. 

Automatic Gain 
Control (AGC) 

Less than 10 dB change in audio output for 
inputs from 10 to 100,000 microvolts. 

Squelch 

Adjustable; threshold less than 0.5 

µ

V. 

ANL Switchable 
Noise Blanker 

RF type 

Audio Output Power 

4 watts into 8 ohms. 

Frequency Response 

300 to 2800 Hz. 

Built-in Speaker 

8 ohms, round. 

External Speaker (Not 
Supplied) 

8 ohms; disables internal speaker when 
connected. 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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 the vehicles. In 
automobiles, the transceiver is usually mounted below the dash panel, with 
the microphone bracket beside it. 

 

MOUNTING THE RADIO 

Your 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 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 with 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 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 +13.8V 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 prevents 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 –13.8V DC. This is usually the chassis of the 

car. 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 the microphone is 
readily accessible.   

 
 

 
 
 

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Summary of Contents for DX-55V

Page 1: ...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 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 Uni...

Page 2: ... Range 30 C to 50 C Microphone Plug in dynamic with push to talk switch and coiled cord Input Voltage 13 8V DC nominal 15 9V max 11 7V min Positive or negative ground Transmit AM full mod 2 2A Receiver Squelched 0 3A Maximum Audio output 0 7A Size 2 3 8 H x 7 7 8 W x 9 1 4 D Weight 5 Ibs Antenna Connector UHF SO239 Meter 3 in 1 Illuminated indicates relative output power received signal strength a...

Page 3: ...ide a good electrical 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 with 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 inter...

Page 4: ... 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 TUNNING THE ANTENNA FOR OPTIMUM SWR 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 B...

Page 5: ... speaker or the external speaker if used 2 SQUELCH outer dual concentric 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 backgrounds noise is eliminated Turn fully counterclockwise then slowly clockw...

Page 6: ... but when you set to PA position the transceiver acts as a public address amplifier Before operating PA you must first connect an external PA speaker 8 ohm more than 2W to the PA Speaker jack on the unit rear panel 12 NB NB OFF When the switch is placed in the NB position the RF noise blanker is activated The RF noise blanker is very effective for repetitive impulse noise such as ignition interfer...

Page 7: ...s see next section ALTERNATE MICROPHONES AND INSTALLATION OPERATING 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 tuning VOL control clockwise on your transceiver 3 Set the VOLUME for a comfortable listening level 4 Set the MODE switch to the desire mode 5 Listen to the background noise...

Page 8: ...ore beginning the actual wiring read carefully the circuit and wiring information provided with the microphone you select Use the minimum head 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 1 Remove the retaining screw 2 Unscrew the housing from the pin receptacle body 3 Loosen ...

Page 9: ...rophone plug 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 counterclo...

Page 10: ...MEMO MEMO 17 18 ...

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