Filter Selection - Icom IC-78 Instruction Manual

Filter selection

The filter selection switches the IF passband width as
shown in the table at right.
The filter selection is for temporal setting.
q Select the desired mode programmed channel.
(p. 13)
w Push [SET] for 1 sec. to enter quick set mode .
e Push [UP Y] or [Z DN] several times until "FILTER"
appears on the display.
r Rotate the channel selector to select desired pass-
band width.
• Either " " or " " does not appear while the nor-
mal filter is selected.
• " " appears when the wide filter is selected.
• " " appears when the narrow filter is selected.
t Push [SET] to exit quick set mode .
• Filter construction (Rx)
2nd IF signal
• Filter selection table
WIDE
SSB
NORMAL
NARROW
WIDE
CW
NORMAL
NARROW
WIDE
RTTY
NORMAL
NARROW
WIDE
NORMAL
AM
NARROW
*Can be used when the expanded filter selection is turned on in the initial set mode . (see next page)
3
CFWS450HT (6 kHz)*
no FL-52A FL-53A
6 kHz* 6 kHz* 6 kHz*
2.4 kHz 2.4 kHz 2.4 kHz
— 500 Hz* 250 Hz*
6 kHz* 6 kHz* 6 kHz*
2.4 kHz 2.4 kHz 2.4 kHz
— 500 Hz 250 Hz
6 kHz* 6 kHz* 6 kHz*
2.4 kHz 2.4 kHz 2.4 kHz
— 500 Hz 250 Hz
— —
6 kHz 6 kHz 6 kHz
2.4 kHz 2.4 kHz
2.4 kHz
500 Hz* 250 Hz*
• Optional filter variations
Name
FL-52A
FL-53A
FL-96
FL-222
FL-257
When an optional filter is installed, set the optional
filter in initial set mode . An optional filter is not se-
lected by default.
Through
1
FL-65 (2.4 kHz)* 2nd IF signal/DET
2
FL-257 (3.3 kHz)*
2
FL-96 (2.8 kHz)*
1
*
2
FL-222 (1.8 kHz)*
2
FL-52A (500 Hz)*
2
*
2
FL-53A (250 Hz)*
3
*
FL-96 FL-222
6 kHz*
6 kHz*
2.8 kHz
2.4 kHz 2.4 kHz
— 1.8 kHz*
6 kHz*
6 kHz*
2.8 kHz
2.4 kHz 2.4 kHz
— 1.8 kHz
6 kHz*
6 kHz*
2.8 kHz
2.4 kHz 2.4 kHz
— 1.8 kHz
— — —
6 kHz 6 kHz
2.4 kHz 2.4 kHz
2.8 kHz* 1.8 kHz*
OPERATION
Band width Mode
500 Hz/–6dB CW/RTTY-N
250 Hz/–6dB CW/RTTY-N
2.8 KHz/–6dB SSB-W
1.8 KHz/–6dB SSB-N
3.3 KHz/–6dB SSB-W
AM; Narrow,
SSB/CW/RTTY; Normal
OPTION
AM; Normal,
SSB/CW/RTTY; Wide
FL-257
6 kHz*
3.3 kHz
2.4 kHz
—
6 kHz*
3.3 kHz
2.4 kHz
—
6 kHz*
3.3 kHz
2.4 kHz
—
—
6 kHz
2.4 kHz
3.3 kHz*
4
21