Icom IC-7100 Advanced Instructions - Page 106
Manual Notch function, Mode = Manual notch: SSB/CW/RTTY/AM
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Previous view 5 FUNCTIONS FOR RECEIVE Notch function (Continued) DDManual Notch function (Mode =Manual notch:SSB/CW/RTTY/AM) The Manual Notch function allows you to manually attenuate a frequency via the "NOTCH control." qqPush NOTCH (C) once or twice to turn ON the Manual Notch function. • "MN" appears. wwHold down NOTCH (C) for 1 second to display the "NOTCH" screen. • Touch [WIDTH](D) to select the Manual Notch filter width, "WIDE," "MID" or "NAR." eeRotate the Dial to adjust the Notch filter frequency. • Since the Notch filter has the very sharp characteristic, when adjusting a filter, slowly rotate the Dial. • If desired, push NOTCH (C) to exit the "NOTCH" screen. Mode SSB RTTY CW AM Center frequency -1040 Hz to +4040 Hz CW pitch frequency -2540Hz to CW pitch frequency +2540Hz -5060 Hz to +5100 Hz Left Display Center Right The L, R, C or D in the instructions indicate the part of the controller. L: Left side R: Right side C: Center bottom D: Display (Touch screen) NOTCH Manual Notch icon Manual Notch is OFF Manual Notch is ON Desired signal (AF) Desired signal (AF) Unwanted interference Interference frequency is attenuated Manual Notch filter width While tuning the manual notch filter, noise may be heard. This comes from the DSP unit and does not indicate an equipment malfunction. 5-11