Filter Selection - Icom IC-R75 Instruction Manual

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 Push [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 se-
lected by default.
• Filter construction
2nd IF signal
18
9 MHz IF filter
FL-23 (15 kHz)
Mixer
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
Passband
IF Filter
width
FL-100 500 Hz/–6 dB CW-N, RTTY-N
FL-101 250 Hz/–6 dB
9 MHz
FL-103 2.8 kHz/–6 dB SSB-W
FL-223 1.9 kHz/–6 dB SSB-N
FL-232 350 Hz/–6 dB CW-N, RTTY-N
FL-52A 500 Hz/–6 dB CW-N, RTTY-N
FL-53A 250 Hz/–6 dB CW-N
455 kHz
FL-96 2.8 kHz/–6 dB SSB-W
FL-222 1.8 kHz/–6 dB SSB-N
FL-257 3.3 kHz/–6 dB SSB-W
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
Recommended
selectivity
CW-N
3rd IF signal