Icom IC-R75 Instruction Manual - Page 22

5 RECEIVE FUNCTIONS ■ Filter selection The filter selection switches the IF passband width as shown in the table at right. The filter selection is automatically memorized in each mode. q Select the desired mode with the mode switches. w P ush [FIL] one or more times to select the desired filter combination. • ã or ç does not appear while in normal IF filter. • ç appears when wide IF filters are selected. • ã appears when narrow IF filters are selected. When an optional filter is installed, set the optional filter in filter set mode. Optional filters are not selected by default. IF 9 MHz 455 kHz Filter FL-100 FL-101 FL-103 FL-223 FL-232 FL-52A FL-53A FL-96 FL-222 FL-257 Passband Recommended width selectivity 500 Hz/-6 dB CW-N, RTTY-N 250 Hz/-6 dB CW-N 2.8 kHz/-6 dB SSB-W 1.9 kHz/-6 dB SSB-N 350 Hz/-6 dB CW-N, RTTY-N 500 Hz/-6 dB CW-N, RTTY-N 250 Hz/-6 dB CW-N 2.8 kHz/-6 dB SSB-W 1.8 kHz/-6 dB SSB-N 3.3 kHz/-6 dB SSB-W • Filter construction 2nd IF signal 9 MHz IF filter FL-23 (15 kHz) FL-272 (2.4 kHz) FL-103 (2.8 kHz) FL-223 (1.9 kHz) FL-100 (500 Hz) FL-232 (350 Hz) FL-101 (250 Hz) optional Mixer 455 kHz IF filter CFWS450E (15 kHz) CFWS450HT (6 kHz) FL-65 (2.4 kHz) FL-257 (3.3 kHz) FL-96 (2.8 kHz) FL-222 (1.8 kHz) FL-52A (500 Hz) FL-53A (250 Hz) optional 3rd IF signal 18