background image

C.  Check your coaxial cable routing (it may be pinched when routed 

into the car). 

 

D.  Try a different location on your car (keeping in mind the radiation 

pattern you wish) 

 

E.  Is the antenna perfectly vertical? 

 

F.  Try a different location in your neighborhood. Stay away from 

large metal objects when adjusting (metal telephone or light posts, 
fences, etc.). 

 
 
 
 
 

 
 

EXTERNAL SPEAKER 

The external speaker jack (EXT.SPK) on the rear panel is used for 

remote receiver monitoring. The external speaker should have 8 ohms 
impedance and be able to handle at least 4 watts. When the external speaker 
is plugged in, the internal speaker is disconnected. 

 
 
 

 
 
 
 
 
 
 
 
 

Operation 

 

CONTROL FUNCTIONS 

There are fifteen controls and four indicators on the front panel of your 
transceiver. 

 

FRONT PANEL 

 

 

 
 

 

 

1.  OFF/ON/VOLUME (inner dual concentric): 

Turn clockwise to apply 

power to the unit and to set the desired listening level. During normal 
operation, the VOLUME 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 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. Any signal to be received must now be slightly stronger than 
the average received noise. Further clockwise rotation will increase the 
threshold level, which a signal must overcome in order to be heard. Only 
strong signals will be heard at a maximum clockwise setting.   

 

3.  ECHO (inner dual concentric):

 This control is used to echo effect. 

 

4.  TONE (outer dual concentric): 

This control is used to intervals of echo 

sound. 

 
 

- 8 - 

 

The transceiver will operate into an SWR of 2 to 1 indefinitely
and sustain an SWR of 20:1 for a maximum of 5 minutes at rated
operating conditions. 

NOTE 

- 7 - 

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...

Reviews: