Page 43FT-991 O PERA T I N G M A N U A LUsing the UP/DWN Buttons of theSupplied MH-31A8J Hand MicrophoneThe UP/DWN buttons on the supplied MH-31A8J HandMicrophone may also be used to manually scan the fre-quency upward or downward.In modes other than AM/FM, the frequency changesby the same step as the maindial.When the microphone FSTbutton is pressed, the tuningrate increases by a factor often, in a manner similar tothe transceiver front panelFAST button.T h e f r e q u e n c y c h a n g eamount (step size) differsdepending on the presetmodulation form and FST button condition.operAtingMode up DWN FST+UPFSt+dWnCW/RTTY/DATA-LSB/DATA-USB+5 Hz −5 Hz +100 Hz −100 HzLSB/USB/AM +10 Hz −10 Hz +100 Hz −100 HzFM/C4FM/DATA-FM +5 kHz −5 kHz +50 kHz −50 kHzconvenience featuresM ore Frequency nAvigAtion techniqueS
