Selecting The Digital If Filter; Dadjusting The Passband Width; Dselecting The Filter Shape - Icom IC-R8600 Instruction Manual

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 to adjust the passband width.
MAIN DIAL
L When you change the passband width, the Twin PBT
setting is reset to the center position.
Passband width mode
4. In the SSB or CW mode, you can change the filter
shape by touching [SHARP] or [SOFT].
LSee "Selecting the filter shape" to the right.
5. To close the FILTER screen, push
times.
[Receiving mode and the IF filter]
Mode
SSB
CW
FSK
AM
S-AM
FM
WFM
D-STAR
P25
NXDN-
dPMR
NXDN-
DCR
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
several
EXIT
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.
5-3
OTHER FUNCTIONS
IF filter
Selectable range (steps)
(default)
FIL 1 (3.0 kHz)
50 Hz to 500 Hz (50 Hz)/
FIL 2 (2.4 kHz)
600 Hz to 3.6 kHz (100 Hz)
FIL 3 (1.8 kHz)
FIL 1 (1.2 kHz)
50 Hz to 500 Hz (50 Hz)/
FIL 2 (500 Hz)
600 Hz to 3.6 kHz (100 Hz)
FIL 3 (250 Hz)
FIL 1 (2.4 kHz)
50 Hz to 500 Hz (50 Hz)
FIL 2 (500 Hz)
600 Hz to 2.7 kHz (100 Hz)
FIL 3 (250 Hz)
FIL 1 (9.0 kHz)
FIL 2 (6.0 kHz)
200 Hz to 10.0 kHz (200 Hz)
FIL 3 (3.0 kHz)
FIL 1 (50 kHz)
FIL 2 (15 kHz)
Fixed
FIL 3 (7.0 kHz)
FIL 1 (200 kHz) Fixed
FIL 1 (15 kHz)
FIL 2 (10 kHz)
Fixed
n FIL 3 (7.0 kHz)
FIL 1 (10 kHz)
FIL 2 (7.0 kHz)
Fixed
vn
FIL 3 (5.0 kHz)
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