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RECEIVER 

 

Sensitivity 

SSB: 0.25 uV for 10 dB (S=N)/N at 
greater than ½-watt of audio output. 
AM: 1.0 uV for 10 dB (S+N)/N at 
greater than ½-watt of audio output. 
FM: 1.0 uV for 10 dB (S+N)/N at greater 
than ½-watt of audio output. 

Selectivity 

AM/FM: 6 dB @ 3KHz, 50 dB @ 9KHz. 
SSB: 6 dB @ 2.1KHz, 60 dB @ 3.3KHz. 

Image Rejection 

More than 65 dB. 

IF Frequency 

AM/FM: 10.695 MHz 1

st

 IF, 455 KHz 

2

nd

 IF  

SSB: 10.695 MHz 

Adjacent-Channel 
Rejection 

60 dB AM/FM & 70 dB SSB 

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 uV. 

ANL Switchable. 
Noise Blanker 

RF type, effective on AM/FM and SSB 

Clarifier Range 

Fine (TX/RX) 

±

1 KHz. 

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 CONNECTION 

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 88HL

Page 1: ...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 additiona...

Page 2: ...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 4A SSB 25 watts PEP output 6A Receiver Squelched 0 6A Maximum au...

Page 3: ...en 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...

Page 4: ...l 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 an...

Page 5: ...ME control is used to adjust the output level obtained either at the transceiver speaker or the external speaker if used 2 SQUELCH CONTROL outer dual concentric This control is used to cut off or elim...

Page 6: ...ob 11 METER This meter indicates received signal strength transmitter RF output power and SWR level 12 10KHz FREQUENCY SHIFT SWITCH When switch is pressed the frequency is shifted 10KHz up On followin...

Page 7: ...ND 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 cont...

Page 8: ...ion either USB or LSB a true reproduction of single tone of modulation will result and if the tone is increased in frequency such as a low pitched whistle a high pitched whistle you will hear the incr...

Page 9: ...efore 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...

Page 10: ...the microphone plug wiring connect and secure the microphone plug in the transceiver Limited means that we will repair problems caused by factory defects or normal use at no charge Before returning a...

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