5
OTHER FUNCTIONS
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5-3
Selecting the
digital IF filter
The IC-R8600 has 3 digital IF filter passband widths for
each receive mode.
z
Touch the filter icon several times to select FIL 1
(wide), FIL 2 (mid) or FIL 3 (narrow).
L
Each touch changes the filter.
D
Adjusting the passband width
1. Touch the filter icon for 1 second.
2. Touch [BW].
•
Selects the passband width mode.
L
You cannot change the passband width in the FM,
WFM or DIGITAL modes.
3. Rotate
MAIN DIAL
to adjust the passband width.
L
When you change the passband width, the Twin PBT
setting is reset to the center position.
4. In the SSB or CW mode, you can change the filter
shape by touching [SHARP] or [SOFT].
L
See "Selecting the filter shape" to the right.
5. To close the FILTER screen, push
EXIT
several
times.
Mode
IF filter
(default)
Selectable range (steps)
SSB
FIL 1
(
3.0 kHz
)
50 Hz to 500 Hz (50 Hz)/
600 Hz to 3.6 kHz (100 Hz)
FIL 2
(
2.4 kHz
)
FIL 3
(
1.8 kHz
)
CW
FIL 1
(
1.2 kHz
)
50 Hz to 500 Hz (50 Hz)/
600 Hz to 3.6 kHz (100 Hz)
FIL 2
(
500 Hz
)
FIL 3
(
250 Hz
)
FSK
FIL 1
(
2.4 kHz
)
50 Hz to 500 Hz (50 Hz)
600 Hz to 2.7 kHz (100 Hz)
FIL 2
(
500 Hz
)
FIL 3
(
250 Hz
)
AM
S-AM
FIL 1
(
9.0 kHz
)
200 Hz to 10.0 kHz (200 Hz)
FIL 2
(
6.0 kHz
)
FIL 3
(
3.0 kHz
)
FM
FIL 1
(
50 kHz
)
Fixed
FIL 2
(
15 kHz
)
FIL 3
(
7.0 kHz
)
WFM
FIL 1
(
200 kHz
)
Fixed
D-STAR
P25
NXDN
-
n
FIL 1
(
15 kHz
)
Fixed
FIL 2
(
10 kHz
)
FIL 3
(
7.0 kHz
)
dPMR
NXDN
-
vn
DCR
FIL 1
(
10 kHz
)
Fixed
FIL 2
(
7.0 kHz
)
FIL 3
(
5.0 kHz
)
D
Selecting the
filter shape
In the SSB or CW mode, you can independently
set the DSP filter shape to soft or sharp for each
operating mode.
SHARP
This selection is to emphasize the passband width
of the filter. The filter has an almost ideal shape
factor. Signals out of the passband are extremely
filtered out and it gives you better audio quality.
SOFT
The filter shoulders are roundly formed as in analog
filters. This decreases noise components in the
high and low frequencies of the filter passband and
increases the S/N ratio of the target signal. These
characteristics play an effective role in picking up
very weak signals. The filter shape is kept, and the
sharpness of the bandpass is excellent.
Passband width mode
[Receiving mode and the
IF filter]
