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away from the microphone. In the Public Address (PA) mode, the control functions 
as the volume control. 

 

 
6.

 

RF GAIN CONTROL:

 Adjust this knob for desired level of incoming signal.  

 
7.

 

DIM CONTROL: 

This knob

 

controls the level of brightness for the meter lamp, 

faceplate, frequency display and channel display. Turn clockwise to activate 
backlight circuit.

 

 

8.

 

RF POWER CONTROL:

 This control allows the user to adjust RF power output. 

 

9.

 

ECHO CONTROL:

 This control is used to adjust echo effect. 

 

10.

 

TIME CONTROL:

 This control is used to adjust intervals of echo. 

 

11.

 

FINE/COARSE CONTROL: 

Allows variation of the radio operating frequencies 

above and below the channel frequency. Although this control is intended primarily 
to tune in SSB signals, it may be used to optimize AM signals.  

  

12.

 

CHANNEL SELECTOR:

 This control is used to select the desired transmit and 

receive channel. 

 

13.

 

FRONT PANEL METER:

 The front panel meter allows the user to monitor 

incoming signal strength, RF output power and SWR level. 

 
14.

 

ILLUMINATED FACE PLATE: 

All faceplate lettering will fully illuminate to 

allow the user easy viewing at night. This unique, solid state, backlight is designed 
to maximize night vision while minimizing eye fatigue. Therefore, it is ideal for 
both day or night. 

 

15.

 

BAND SELECTOR:

 This switch is used to select the band. 

 

16.

 

PWR/SWR/RB SWITCH: 

When in the RB position

the radio transmits an audio 

tone at the end of your transmission to indicates that transmission has ended. As a 
courtesy to others, use the Roger Beep only when necessary. When the switch is in 
the “SWR” position, the meter indicates the Standing Wave Ratio (SWR) of your 
antenna. There are no adjustments because the SWR circuit in this radio calibrates 
itself automatically (accurate at maximum power output). When this switch is in 
“PWR” position, the meter indicates your power output. 

 

17.

 

TALKBACK CONTROL:

 This feature is used to monitor your own voice. For 

example, you could use this feature to compare different microphones. This knob 
controls the volume of the Talkback level. The Talkback circuit is off when the 
MIC GAIN knob is depressed. 

 

 

7

 

18.

 

OFF/ NB/ANL /FD.OFF SWITCH:

 In the NB/ANL position, the RF Noise 

Blanker and the automatic Noise Limiter in the audio circuits are also activated. 
The Noise Blanker is very effective in eliminating repetitive impulse noise such as 
ignition interference. When the switch is in the F.D.OFF position, the frequency 
Display is OFF. 

  

19.

 

OFF/ECHO/VC SWITCH: 

With

 

the switch in VC position you can adjust the 

tone and pitch of your voice. With

 

the switch in ECHO you can add echo and 

reverb to your voice.  In the OFF position your voice will sound natural.    

 

 

20.

 

FREQUENCY COUNTER: 

This display indicates the frequency of the selected 

channel. 

 

21.

 

OFF/+10K/PA SWITCH:

 When the switch is in the +10KHz position, the 

frequency is shifted up 10KHz. In the PA position, the radio acts as public address 
amplifier. Your voice will come out of the speaker that is plugged into the PA. SP. 
jack on the rear panel. The radio does not operate when you are in the PA mode. 

 

22.

 

CHANNEL DISPLAY:

 The channel display indicates the current selected channel. 

 

Summary of Contents for DX 94HP

Page 1: ...OF CONTENTS PAGE CHAPTER 1 Specifications 2 CHAPTER 2 Installation 3 Installing The Radio 3 Ignition Noise Interference 4 Antenna 4 External Speaker 4 Public Address 4 CHAPTER 3 Operation 5 Front Pane...

Page 2: ...n the location where the radio is to be installed Make sure nothing will interfere with either the radio or the mounting bolts Mark and then drill holes for the mounting bracket 2 Most radio antennas...

Page 3: ...impedance and be able to handle at least 4 watts When the external speaker is plugged in the internal speaker is disconnected PUBLIC ADDRESS To use the Public Address PA function first connect an ext...

Page 4: ...ed As a courtesy to others use the Roger Beep only when necessary When the switch is in the SWR position the meter indicates the Standing Wave Ratio SWR of your antenna There are no adjustments becaus...

Page 5: ...ly in a normal voice This transceiver comes complete with a low impedance dynamic microphone B PROCEDURE TO RECEIVE 1 Be sure that power source microphone and antenna are connected to the proper conne...

Page 6: ...eased whereas in the LSB mode the transmitter s output frequency is decreased The result in listening to the receiver is that when the MODE switch is in the proper position either USB or LSB a true re...

Page 7: ...be used is provided with pre cut leads they must be revised as follows 1 Cut leads so that they extend 7 16 beyond the plastic insulating jacket of the microphone cable 2 All leads should be cut to th...

Page 8: ...he connections to pin 1 and 3 are made first and then the connections to pins 2 and 4 Use a minimum amount of soldering and be careful to prevent excessive solder accumulation on pins which could caus...

Page 9: ...16 MEMO 17 MEMO...

Page 10: ...gest calling between 10 00 AM and 4 00 PM Pacific Time z Please include a note with a detailed description of the symptoms This is important because it will help the technician who works on your radio...

Page 11: ...20 Printed in Taiwan ATDX98010C...

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