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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 100,000mV. 

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. 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

- 3 - 

 

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 coax connector to the standard antenna connector on the 
rear panel of the radio. Most antennas are terminated with a type PL-259 
connector. 

 

 

3.  Connect the red DC power input wire (with the fuse) to +13.8V DC. This wire 

extends from the rear panel. In automatic 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.   

 

 

 

 

- 4 - 

-3- 

-4- 

Summary of Contents for DX-33HP

Page 1: ...p www cbtricks com Printed In Malaysia AT1148010H DX 33HP 10 Meter Amateur Mobile Transceiver OWNER S MANUAL POWER RX TX BAND D A E B F C MED MIC RF VOL SQ OFF AM FM PA HI LO NB ANL OFF LO HI OFF ECHO...

Page 2: ...ophone Plug in dynamic with push to talk switch and coiled cord Input Voltage Current 13 8V DC nominal 15 9V max 11 7V min Positive or negative ground Transmit AM FM Hi Power _ 10A Receiver Squelched...

Page 3: ...ood 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 m...

Page 4: ...irection 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 distance A standard...

Page 5: ...ver 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 b...

Page 6: ...witch is placed in the ANL NB position the RF Noise Blanker is also activated The RF Noise Blanker is very effective for repetitive impulse noise such as ignition interference 13 BAND SWITCH HI LOW Th...

Page 7: ...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 microphon...

Page 8: ...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...

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