If Filter Selection; D If Filter Selection; D Filter Passband Width Setting (Except Fm Mode) - Icom ic-7700 Instruction Manual

5
FUNCTIONS FOR RECEIVE

■ IF filter selection

The filter selection is automatically memorized in
each mode.
The PBT shift frequencies are automatically memo-
rized in each filter.

D IF filter selection

D Filter passband width setting
• During the passband width setting
Blinks
Mode IF filter
FIL1 (3.0 kHz)
SSB FIL2 (2.4 kHz)
FIL3 (1.8 kHz)
FIL1 (1.2 kHz)
SSB-D
CW FIL2 (500 Hz)
PSK
FIL3 (250 Hz)
FIL1 (2.4 kHz)
RTTY FIL2 (500 Hz)
FIL3 (250 Hz)
FIL1 (9.0 kHz)
AM
FIL2 (6.0 kHz)
AM-D
FIL3 (3.0 kHz)
FIL1 (15 kHz)
FM
FIL2 (10 kHz)
FM-D
FIL3 (7.0 kHz)
FILTER
(except FM mode)
Adjustable range (steps)
50 to 500 Hz (50 Hz)
600 Hz to 3.6 kHz (100 Hz)
50 to 500 Hz (50 Hz)
600 Hz to 3.6 kHz (100 Hz)
50 to 500 Hz (50 Hz)
600 Hz to 2.7 kHz (100 Hz)
200 Hz to 10 kHz (200 Hz)
Fixed
The transceiver has 3 passband width IF filters for
each mode.
For SSB, CW and PSK modes, the passband width
can be set within 50 to 3600 Hz in 50 or 100 Hz steps.
A total of 41 passband widths are available.
For RTTY mode, the passband width can be set
within 50 to 2700 Hz in 50 or 100 Hz steps. A total of
32 passband widths are available.
For AM mode, the passband width can be set within
200 Hz to 10 kHz in 200 Hz steps. A total of 50 pass-
band widths are available.
For FM mode, the passband width is fixed and 3
passband widths are available.
q Select the desired mode.
w Push
FILTER
1, 2 or 3.
• The selected passband width and filter number is dis-
played in the LCD.
q Hold down
FILTER
screen.
w Select any mode except FM.
• Passband widths for FM modes are fixed and cannot
be adjusted.
e Push
FILTER
IF filter.
r Push [BW]
F-1
the desired passband width.
Then push [BW]
• Hold down [DEF]
value.
• While holding down [BW]
also adjusts the desired passband width.
t If desired, repeat steps w to r.
y Push
EXIT/SET
The PBT shift frequencies are cleared when the
passband width is changed.
This filter set screen graphically displays the PBT
shift frequencies and CW pitch operations.
5-14
several times to select the IF filter
for 1 second to enter filter set
several times to select the desired
, then rotate the main dial to set
again.
F-1
for 1 second to select the default
F-4
, rotating the main dial
F-1
to exit filter set screen.