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REAR PANEL 

 

 

 

21. POWER: 

Accepts 13.8V DC power cables with built-in fuse (7 amp.) to 

be connected. 

 

22. EXT SP: 

Accepts 4 to 8 ohms, 5 watt external speaker to be connected. 

When external speaker is connected to this jack, the built-in speaker is 
automatically disconnected. 

 

23. PA. SP:

 Used to connect a PA speaker (8 ohm 4W) for PA operation. 

Before operating PA you must first connect a PA speaker to this jack. 

 

24. ANTENNA:

 Accepts 50 ohm coaxial cable with a type PL-259 plug to 

be connected. 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

PRESS-TO-TALK MICROPHONE 

 

The receiver and transmitter are controlled by the press-to-talk switch on the 
microphone. Press the switch and the transmitter is activated, release switch 
to receive. When transmitting, hold the microphone two inches from the 
mouth and speak clearly in a normal “voice”. The radios come complete with 
low-impedance (500 ohm) dynamic microphone. For installation instructions 
on other microphones, 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 from the speaker. Turn the 

SQUELCH

 

control slowly clockwise until the noise JUST disappears (no signal 
should be present). Leave the control at this setting. The 

SQUELCH

 is 

now properly adjusted. The receive will remain quiet until a signal is 
actually received. Do not advance the control too far, or some of the 
weaker signals will not be heard. 

 

6. Set 

CHANNEL

 selector switch to the desired channel. 

 

7. Set 

the 

RF

 gain control fully clockwise for maximum 

RF

 gain. 

 
8. Adjust 

CLARIFIER

 control to clarify the SSB signals or to optimize 

AM/FM signals. 

 

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. 

 
 
 
 
 
 
 

 

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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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