5-15
5
FUNCTIONS FOR RECEIVE
D
Roofing filter selection
The IC-7700 has 3, 6 and 15 kHz roofing filters at the
1st IF frequency. The roofing filter provides interfer-
ence reduction from nearby strong signals.
q
Hold down
FILTER
for 1 second to enter filter set
screen.
w
Select any mode except FM.
e
Push [ROOFING]
F-6
to select the desired filter
width from 15 kHz
,
6 kHz and 3 kHz.
• Hold down [DEF]
F-4
for 1 second to select a default
value.
r
Push
EXIT/SET
to exit filter set screen.
D
DSP filter shape
The type of DSP filter shape for each SSB, SSB data
and CW can be selected independently from soft and
sharp.
q
Hold down
FILTER
for 1 second to enter filter set
screen.
w
Select SSB, SSB data or CW mode.
e
Push [SHAPE]
F-7
to select the desired filter
shape from soft and sharp.
r
Push
EXIT/SET
to exit filter set screen.
The filter shape can be set for each band (HF and 50
MHz bands), mode, as well as the passband width
setting (CW only) independently from your default set-
ting in filter shape set mode.
D
Filter shape set mode
The type of DSP filter shape for SSB, SSB data and
CW can be selected independently from soft and
sharp.
q
Hold down
FILTER
for 1 second to enter filter set
screen.
w
Hold down [SHAPE]
F-7
for 1 second to enter fil-
ter shape set mode.
e
Push [
Y
]
F-1
or [
Z
]
F-2
to select the desired
item.
r
Rotate the main dial to select the filter shape from
soft and sharp.
t
Push
EXIT/SET
to exit filter shape set mode.
• Default roofing filter
(unit: kHz)
Mode FIL1 FIL2 FIL3 Mode FIL1 FIL2 FIL3
SSB
15
15
6
SSB-D
6
6
6
CW
6
6
6
RTTY
15
6
6
PSK
6
6
6
AM
15
15
15
