Filter
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Filter variations
*Optional filter.
Optional filter installation and selection tables
SSB
23
4
RECEIVE AND TRANSMIT
D Optional filter selection
Two optional filters can be installed in the IC-
706MKIIG.
Narrow filters help reject interference from adjacent
signals and obtain good selectivity.
Wide filters provide improved audio for SSB opera-
tion when no interfering signals are present.
Consult the table below to select a filter most suitable
for your operating needs.
Narrow filters for AM/FM modes are standard.
FILTER PRESETTING:
After you install a filter (see p. 60 for installation), you
must specify the installed filter in initial set mode
(item 19 “OPT. FIL 1” or item 20 “OPT. FIL 2”; see
p. 51).
FILTER ON/OFF:
➀Select M3.
•Push [DISPLAY] 1 or 2 times if G or S appears.
•Push [MENU] one or more times to select
M3.
➁Push [(F-1)FIL] momentarily to select the narrow
filter; for 2 sec. to select the wide filter.
•ã appears when the narrow filter is selected; ç
appears when the wide filter is selected.
Note:When selecting the narrow filter, the graphic
passband is narrowed (see diagram below).
Normal
operation
narrow is
selected
FL-101* CW, RTTY 250 Hz/–6 dB
CW, RTTY 350 Hz/–6 dB
CW, RTTY 500 Hz/–6 dB
SSB, CW, RTTY 2.8 kHz/–6 dB
FL-223* SSB, CW, RTTY 1.9 kHz/–6 dB
SSB, CW, RTTY 2.4 kHz/–6 dB
AM, FM 8 kHz/–6 dB
Mode Band widthName
FIL 1
FIL 2
No
optional
filter
FL-100 FL-101 FL-103 FL-223 FL-232
No
optional
filter
W:–––
M:FL-272
N:–––
W:–––
M:FL-272
N:–––
W:–––
M:FL-272
N:–––
W:FL-103
M:FL-272
N:–––
W:–––
M:FL-272
N:FL-223
W:–––
M:FL-272
N:–––
FL-100
W:–––
M:FL-272
N:–––
W:–––
M:FL-272
N:–––
W:–––
M:FL-272
N:–––
W:FL-103
M:FL-272
N:–––
W:–––
M:FL-272
N:FL-223
W:–––
M:FL-272
N:–––
FL-101
W:–––
M:FL-272
N:–––
W:–––
M:FL-272
N:–––
W:–––
M:FL-272
N:–––
W:FL-103
M:FL-272
N:–––
W:–––
M:FL-272
N:FL-223
W:–––
M:FL-272
N:–––
FL-103
W:FL-103
M:FL-272
N:–––
W:FL-103
M:FL-272
N:–––
W:FL-103
M:FL-272
N:–––
W:FL-103
M:FL-272
N:–––
W:FL-103
M:FL-272
N:FL-223
W:FL-103
M:FL-272
N:–––
FL-223
W:–––
M:FL-272
N:FL-223
W:–––
M:FL-272
N:FL-223
W:–––
M:FL-272
N:FL-223
W:FL-103
M:FL-272
N:FL-223
W:–––
M:FL-272
N:FL-223
W:–––
M:FL-272
N:FL-223
FL-232
W:–––
M:FL-272
N:–––
W:–––
M:FL-272
N:–––
W:–––
M:FL-272
N:–––
W:FL-103
M:FL-272
N:–––
W:–––
M:FL-272
N:FL-223
W:–––
M:FL-272
N:–––
FIL 1
FIL 2
No
optional
filter
FL-100 FL-101 FL-103 FL-223 FL-232
No
optional
filter
W:–––
M:FL-272
N:–––
W:–––
M:FL-272
N:FL-100
W:–––
M:FL-272
N:FL-101
W:FL-103
M:FL-272
N:–––
W:–––
M:FL-272
N:FL-223
W:–––
M:FL-272
N:FL-232
FL-100
W:–––
M:FL-272
N:FL-100
W:–––
M:FL-272
N:FL-100
W:FL-272
M:FL-100
N:FL-101
W:FL-103
M:FL-272
N:FL-100
W:FL-272
M:FL-223
N:FL-100
W:FL-272
M:FL-100
N:FL-232
FL-101
W:–––
M:FL-272
N:FL-101
W:FL-272
M:FL-100
N:FL-101
W:–––
M:FL-272
N:FL-101
W:FL-103
M:FL-272
N:FL-101
W:FL-272
M:FL-223
N:FL-101
W:FL-272
M:FL-232
N:FL-101
FL-103
W:FL-103
M:FL-272
N:–––
W:FL-103
M:FL-272
N:FL-100
W:FL-103
M:FL-272
N:FL-101
W:FL-103
M:FL-272
N:–––
W:FL-103
M:FL-272
N:FL-223
W:FL-103
M:FL-272
N:FL-223
FL-223
W:–––
M:FL-272
N:FL-223
W:FL-272
M:FL-223
N:FL-100
W:FL-272
M:FL-223
N:FL-101
W:FL-103
M:FL-272
N:FL-223
W:–––
M:FL-272
N:FL-223
W:FL-272
M:FL-223
N:FL-232
FL-232
W:–––
M:FL-272
N:FL-232
W:FL-272
M:FL-100
N:FL-232
W:FL-272
M:FL-232
N:FL-101
W:FL-103
M:FL-272
N:FL-232
W:FL-272
M:FL-223
N:FL-232
W:–––
M:FL-272
N:FL-232
FL-100*
FL-232*
FL-94
FL-103*
FL-272
FM
Normal FL-23+SFPC455E
Narrow FL-94
AM
Normal FL-94
Narrow FL-272
CW, RTTY
Table key:
W—wide position
M—medium (normal) position
N—Narrow position