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5.  SQUELCH:

 This knob is used to eliminate background noise being heard through 

the receiver, which can be disturbing when no transmissions are being heard 
through the receiver. To use this feature, turn the knob fully counterclockwise and 
then turn clockwise slowly until the background noise is just eliminated. Further 
clockwise rotation will increase the threshold level that a signal must overcome in 
order to be heard. Only strong signals will be heard at a maximum clockwise 
setting. 

 

6.  MIC GAIN: 

Adjusts the microphone gain in transmit and PA modes. This controls 

the gain to the extent that full talk power is available several inches away from the 
microphone. In the Public Address (PA) mode, the control functions as the volume 
control. 

 

 
7.  RF GAIN:

 Adjust this knob for desired level of incoming signal.  

 
8.  DIM: 

This knob

 

controls the  level of  brightness for the meter lamp,  faceplate, 

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

 

 

9.  PWR:

 This control allows the user to adjust RF power output. 

 

10.  ECHO:

 This control is used to adjust echo effect. 

 

11.  TIME:

 This control is used to adjust intervals of echo. 

 

12.  FINE / COARSE: 

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.  

  

13.  CHANNEL SELECTOR:

 This control is used to select the desired transmit and 

receive channel. 

 

14.  FRONT PANEL METER:

 The front panel meter allows the user to monitor 

incoming signal strength, RF output power and SWR level. 

 
15.  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 
switch and control recognition day or night. 

 

16.  BAND SELECTOR:

 This switch is used to select the band. 

 

 

 

 

 

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17.  PWR/SWR/RB SWITCH: 

When in the RB position

the radio transmits an audio 

tone at the end of your transmission to indicate 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 (accurate at maximum power output). No adjustments are required because 
the SWR circuit in this radio calibrates itself automatically. The SWR readings are 
most accurate at full power setting. When this switch is in “PWR” position, the 
meter indicates your power output. 

 

18.  TALKBACK:

 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. 

 

19.  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. 

  

20.  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. 

 

 

 

21.  FREQUENCY COUNTER: 

This display indicates the frequency of the selected 

channel. 

 

22.  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. 

 

23.  CHANNEL DISPLAY:

 The channel display indicates the current selected channel. 

 

Summary of Contents for DX 98VHP

Page 1: ...z O FF SWR 1 1 5 3 2 S 1 0 5 3 9 7 SET 40 20 60 dB MAX 200 150 100 50 25 PO 0 PA B IG R IG S E R IE S DX 9 8 V HP F D O FF N B A N L 1 TABLE OF CONTENTS PAGE CHAPTER 1 Specifications 2 CHAPTER 2 Insta...

Page 2: ...th the radio in 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 r...

Page 3: ...e 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 external spe...

Page 4: ...ue Therefore it is ideal for switch and control recognition day or night 16 BAND SELECTOR This switch is used to select the band 7 17 PWR SWR RB SWITCH When in the RB position the radio transmits an a...

Page 5: ...th and speak clearly 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 t...

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: ...n of the symptoms This is important because it will help the technician who works on your radio to locate your problem Intermittent problems are easily overlooked so be sure to give as much detail as...

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