Icom IC-7700 Instruction Manual - Page 102

5 FUNCTIONS FOR RECEIVE D Roofing filter selection • Default roofing filter Mode FIL1 FIL2 FIL3 SSB 15 15 6 SSB-D 6 6 6 CW 6 6 6 Mode RTTY PSK AM FIL1 15 6 15 (unit: kHz) FIL2 FIL3 6 6 6 6 15 15 The IC-7700 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 and hold FILTER for 1 sec. to enter filter set screen. w Select any mode except FM. e Push [ROOFING] F-6 to select the desired filter width from 15 kHz, 6 kHz and 3 kHz. • Push and hold [DEF] F-4 for 1 sec. to select a default value. r Push EXIT/SET to exit filter set screen. D DSP filter shape D 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 and hold FILTER for 1 sec. to enter filter set screen. w Select SSB, SSB data or CW mode. e Push [SHAPE] F-7 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 from your default setting in filter shape set mode. The type of DSP filter shape for SSB, SSB data and CW can be selected independently from soft and sharp. q Push and hold FILTER for 1 sec. to enter filter set screen. w Push and hold [SHAPE] F-7 for 1 sec. to enter filter shape set mode. e Push [Y] F-1 or [Z] F-2 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. 5-14