Kenwood TS-990S Service Manual

Also see for SP-990: Instruction manual

Contents

TS-990S181ADJUSTMENTItem ConditionMeasurement AdjustmentSpecifications/RemarksTest-equipment Unit Terminal Unit Parts MethodSUB RX HFBPF• 11M7) Sub display f.: 13.890000MHzMode: USBP.AMP: OFFSpectrum analyzer settingStart frequency: 5MHzStop frequency: 20MHzTG level: 0dBmTrackinggeneratorSpectrumanalyzerTX-RX(A/2)CN200CN230Check the waveform.10.50MHz 13.90MHz• 28M 8) Sub display f.: 28.100000MHzMode: USBP.AMP: OFFSpectrum analyzer settingCenter Frequency:25.75MHzFrequency span: 50MHzTG level: 0dBm21.50MHz 30.00MHz• 30M~60M 9) Sub display f.: 50.000000MHzMode: USBP.AMP: OFFSpectrum analyzer settingStart frequency: 5MHzStop frequency: 85MHzTG level: -20dBmAfter the adjustment, discon-nect the cable from CN200and CN203.30.00MHz 60.00MHz19. SUB RXMCF• 6kHz1) Sub display f.: 14.200000MHzMode: USBSpectrum analyzer settingCenter f.: 11.374MHzFrequency span: 30kHzTG level: 0dBmConnect the tracking genera-tor output to CN360.Connect the spectrum ana-lyzer input to CN370.After the adjustment, discon-nect the cable from CN360and CN370.TrackinggeneratorSpectrumanalyzerTX-RX(A/2)CN360CN370TX-RX(A/2)L368L369Adjust each coil toobtain the frequencyresponse as shown. 11.374MHz3kHz6dB3kHz6dB• 15kHz 2) Menu No.: 36 (14.2MHz,USB)Spectrum analyzer settingCenter f.: 73.095MHzFrequency span: 75kHzTG level: 0dBmConnect the tracking genera-tor output to CN460.Connect the spectrum ana-lyzer input to CN470.After the adjustment, discon-nect the cable from CN460and CN470.CN460CN470L406L417L418L419Adjust each coil toobtain the frequencyresponse as shown. 73.095MHz7.5kHz3dB7.5kHz3dB