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ADJUSTMENT 

Adjustment          No.        Adjustment Condition & Tuning                      Value      Ref. No. CK. Point  

TX Output                 Use adjustment software to adjust the  

adjustment output to the following values. 

                                                                                

                                                                                

                                                                                

                                                                                

Adj.Soft   

    

  Adj. Freq.     Greatest Low Band Freq.                      Power 

                                        Hi Power                 25.0W 

                       25.0W         Hi          ANT Con  

                                        L2 Power                   10.0W                         10.0W         L2 

                                        L1 Power                    2.5W                           2.5W         L1 

 

TX Output Check        Check that TX output is within the following  

                                value in the range of frequency coverage. 

 

                                        Hi Power                 20.0~30.0W                  20-30W                     ANT Con 

                                        L2 Power                   8.0~12.5W                  8-12.5W  

                                        L1 Power                   2.0~3.0W                   2.0-3.0W  

 

Current Check at      Check that the Hi Power current is less than 

TX                             the following value in the range of  

frequency coverage.                

                         

                                        Hi Power              Less than 7.0A              Less 7.0A                

                                     

 Checking                   Connect a spectrum analyzer to the ANT 

Spurious                   terminal through an attenuator.  

Set the attenuation so that the spectrum  

Analyzer does not distort. 

                                Set the transceiver to TX at Hi  power, 

 check that spurious is less than the 

                                following value in the range of frequency  

coverage in the bandwidth. 

 

Spurious     Less than –70dB of the          Less than                ANT Con 

carrier power                   -70 dB 

 

 

 

 

 

 

 

 

Summary of Contents for IC-F520

Page 1: ...RX C134 during TX Adj Freq 136 MHz RX Side 1 4V 1 4V C133 LV TX Side 1 0V 1 0V C134 Lock Voltage Set the transceiver to the 174 MHz Check and check that each value is within following values Adj Freq...

Page 2: ...20 0 30 0W 20 30W ANT Con L2 Power 8 0 12 5W 8 12 5W L1 Power 2 0 3 0W 2 0 3 0W Current Check at Check that the Hi Power current is less than TX the following value in the range of frequency coverage...

Page 3: ...Connect a millivolt meter or a 600 ohm out put impedance CR oscillator to the trans ceiver s mic terminal Modulation Use the adjustment software to adjust the Balance modulation analyzer s detection o...

Page 4: ...ent to the antenna terminal Set the transceiver to wide ch and CTCSS 88 5Hz Transmit the transceiver with no input to the mic or mic terminal Adjust Freq Near Center Frequency Adj Soft ANT Con WIDE 0...

Page 5: ...ssible deviation Check that the TX S N in the range of the Frequency coverage is more than the following values WIDE More than 40 dB Over 40dB ANT Con NARROW More than 34 dB Over 34dB Adjusting RX dur...

Page 6: ...rrow channels also Adjusting the This Adjustment should be perform after the S3 LEVEL RX sensitivity adjustment finished Set the signal generator following setting for wide channels Adjust Freq Near 1...

Page 7: ...In this condition using the adjustment Adj Soft software raise the squelch D A value until SQL the squelch closes once then lower the D A value again and adjust until the squelch opening point Checki...

Page 8: ...that the AF output reaches 50 of the rated value Check that the RX S N in the range of frequency is as following values WIDE More than 40 dB Over 40dB ANT Con NARROW More than 34 dB Over 34dB SP Jack...

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