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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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- 4 - 

Содержание DX 44V

Страница 1: ...rks 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 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...

Страница 2: ...ange 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 Illuminated indicates relative output power received signal strength TRANSMITTE...

Страница 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...

Страница 4: ...onsult 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 Because the antenna length is directly related to the channel fr...

Страница 5: ...d 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 clockwise until the receiver noise disappears...

Страница 6: ...e frequency is shifted 10KHz up On following channels A channel can be used by setting this switch to 10KHz position Normal 10KHz 3 3A 7 7A 11 11A 15 15A 19 19A 14 OFF ANL NB When the switch is placed in the ANL NB position the RF noise blanker also is activated The RF noise blanker is very effective for repetitive impulse noise such as ignition interference 15 RECEIVER TRANSMIT INDICATOR The rece...

Страница 7: ...F gain OPERATING 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 ALTERNATE MICROPHONES AND INSTALLATION For best results the user should select a low impedance dynamic type microphone or a transistorized microphone Transistorized type...

Страница 8: ...f the microphone jack is used to hold the pin receptacle during the soldering operation best results are obtained when the connections to pins 1 and 3 are made first and then the connections to pins 2 and 4 Use a minimum amount of solder 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 con...

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