Icom IC-7800 Instruction Manual - Page 95

5 FUNCTIONS FOR RECEIVE I IF filter selection [FILTER] for main [FILTER] for sub The transceiver has 3 passband width IF filters for each mode. For SSB, CW and PSK modes, the passband width can be set within 50 to 3600 Hz in 50 or 100 Hz steps. A total of 41 passband widths are available. For RTTY mode, the passband width can be set within 50 to 2700 Hz in 50 or 100 Hz steps. A total of 32 passband widths are available. For AM mode, the passband width can be set within 200 Hz to 10 kHz in 200 Hz steps. A total of 50 passband widths are available. For FM mode, the passband width is fixed and 3 passband widths are available. The filter selection is automatically memorized in each mode. The PBT shift frequencies are automatically memorized in each filter. D IF filter selection q Select the desired mode. w Push [FILTER] several times to select the IF filter 1, 2 or 3. • The selected passband width and filter number is dis- played in the LCD. D Filter passband width setting (except FM mode) q Push [FILTER] for 1 sec. to enter filter set screen. w Select any mode except FM. • Passband widths for FM modes are fixed and cannot be set. e Push [FILTER] several times to select the desired IF filter. r While pushing [F-1•BW], rotate the main dial to set the desired passband width. • In SSB, CW and PSK modes, the passband width can be set within the following range. 50 to 500 Hz 50 Hz steps 600 to 3600 Hz 100 Hz steps • In RTTY mode, the passband width can be set within the following range. 50 to 500 Hz 50 Hz steps 600 to 2700 Hz 100 Hz steps • In AM mode, the passband width can be set within the following range. 200 Hz to 10 kHz 200 Hz steps • Push [F-4•DEF] for 1 sec. to select the default value. t Repeat steps w to r if desired. y Push [EXIT/SET] to exit filter set screen. The PBT shift frequencies are cleared when the passband width is changed. This filter set screen graphically displays the PBT shift frequencies and CW pitch operations. 5-13