Yaesu FT-991 Operating Manual

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Contents

Page 135FT-991 O PERA T I N G M A N U A L112 SSB TX BPFFunction: Sets the frequency characteristics of the DSPband-pass filter for transmitting in SSB mode.Available Values: 100-3000/100-2900/200-2800/300-2700/400-2600Default Setting: 300-2700HzDescription: Selects the frequency characteristics settingof the DSP band-pass filter when transmitting in SSBmode.113 APF WIDTHFunction: Sets the bandwidth of the audio peak filter.Available Values: NARROW/MEDIUM/WIDEDefault Setting: MEDIUMDescription: In CW mode the APF peak center frequen-cy is set according to the CW PITCH frequency andthe chosen APF bandwidth value. In order to listento the desired signal comfortably, select one of thethree bandwidths of the peak filter.114 CONTOUR LEVELFunction: Adjusts the GAIN of the CONTOUR circuit.Available Values: −40 - 0 - 20Default Setting: −15Description: Sets level of the attenuation or the gain ofthe CONTOUR circuit.115 CONTOUR WIDTHFunction: Sets the bandwidth (“Q”) of the CONTOURcircuit.Available Values: 1 - 11Default Setting: 10Description: Sets the bandwidth (WIDTH) of the CON-TOUR circuit.116 IF NOTCH WIDTHFunction: Sets the attenuation bandwidth characteristicof the DSP IF notch filter on the VFO-A.Available Values: NARROW/WIDEDefault Setting: WIDEDescription: Selects the attenuation bandwidth charac-teristic setting of the DSP IF notch filter to “NAR-ROW” or “WIDE”.117 SCP DISPLAY MODEFunction: Sets the scope for either the spectrum or thewaterfall display.Available Values: SPECTRUM/WATER FALLDefault Setting: SPECTRUMDescription: Selects the type of display when the scopefeature activates.SPECTRUM:Enables the spectrum display.WATER FALL:Enables the waterfall display.118 SCP START CYCLEFunction: Selects the sweep interval of the SpectrumScope feature.Available Values: OFF/3sec/5sec/10secDefault Setting: OFFDescription: The scope spectrum is repeatedly swept ac-cording the set interval.119 ASC DIAL SPEEDFunction: Selects the start condition of the Dial AutoScope feature whenever the Main Tuning Dial isturned.Available Values: 0.25/0.5/1/2/4kHz (sec)/DISABLEDefault Setting: 4kHz/secDescription: When the Main Tuning Dial knob is rotatedat the set speed in ASC mode, the spectrum scopesweeping is started automatically.120 SCP SPAN FREQFunction: Sets the bandwidth of the spectrum scopesweeping.Available Values: 50/100/200/500/1000 (kHz)Default Setting: 100kHzDescription: Sets the bandwidth (SPAN) of the spectrumscope.121 PRMTRC EQ1 FREQFunction: Sets the center frequency of the low range forthe 3 band parametric microphone equalizer.Available Values: 100 - 700 (Hz)/OFF (100Hz/step)Default Setting: OFFDescription: Selects the center frequency setting of thelow range of the 3 band parametric microphoneequalizer between “100 Hz” and “700 Hz”.122 PRMTRC EQ1 LEVELFunction: Sets the gain for the low range of the 3 bandparametric microphone equalizer.Available Values: −20 - 0 - 10 (dB)Default Setting: 5Description: Adjusts the gain for the low range of the 3band parametric microphone equalizer between “−20dB” and “+10 dB”.123 PRMTRC EQ1 BWTHFunction: Sets the width variation (“Q”) for the lowrange of the 3 band parametric microphone equal-izer.Available Values: 1 - 10Default Setting: 10Description: Selects the value of the width (Q) for thelow range for the 3 band parametric microphoneequalizer between “1” and “10”.M enu M oDe