Icom IC-7800 Instruction Manual - Page 96

5 FUNCTIONS FOR RECEIVE D Roofing filter selection D DSP filter shape D Filter shape set mode The IC-7800 has 3, 6 and 15 kHz roofing filters at the 1st IF frequency. The roofing filter provides interference reduction from nearby strong signals. q Push [FILTER] for 1 sec. to enter filter set screen. w Select any mode except FM. ePush [F-6•ROOFING] to select the desired filter width from 15 kHz (default), 6 kHz and 3 kHz. • Push [F-4•DEF] for 1 sec. to select a default value. r Push [EXIT•SET] to exit filter set screen. The type of DSP filter shape for each SSB, SSB data and CW can be selected independently from soft and sharp. q Push [FILTER] for 1 sec. to enter filter set screen. w Select SSB, SSB data or CW mode. e Push [F-7•SHAPE] to select the desired filter shape from soft and sharp. r Push [EXIT•SET] to exit filter set screen. The filter shape can be set for each band (HF and 50 MHz bands), mode, as well as the passband width setting (CW only) independently as your default setting in filter shape set mode. The type of DSP filter shape for each SSB, SSB data and CW can be selected independently from soft and sharp. q Push [FILTER] for 1 sec. to enter filter set screen. w Push [F-7•SHAPE] for 1 sec. to enter filter shape set mode. e Push [F-1•Y] or [F-2•Z] to select the desired item. r Rotate the main dial to select the filter shape from soft and sharp. t Push [EXIT/SET] to exit filter shape set mode. Select the filter shape for SSB mode in HF bands. The set filter shape is automatically used only when the IF filter is set to 600 Hz or wider. Select the filter shape for SSB data mode in HF bands. The set filter shape is automatically used only when the IF filter is set to 600 Hz or wider. 5-14