Icom IC-703 Instruction Manual page 13

f. Filter:
One optional filter can be installed in the IC-703.
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.
Narrow filters for AM/FM modes are standard.
FILTER PRESETTING:
After you install a filter (see p. 87 for installation), you
must specify the installed filter in initial set mode (item
" " ; see p. 79).
FILTER ON/OFF:
q Select
.
• Push [DISPLAY] once or twice to select .
• Push [MENU] one or more times to select
w Push [
] momentarily to select the narrow
(F-1)
filter; push for 1 sec. to select the wide filter.
• ã appears when the narrow filter is selected; ç ap-
pears when the wide filter is selected.
NOTE: When selecting the narrow filter (or wide fil-
ter), the graphic passband is changed (see dia-
gram below).
wide is Normal
selected operation
We hope these pointers have been helpful. Now you
are ready for the "Ready to call CQ?".
.
narrow is
selected
QUICK REFERENCE GUIDE
[(F-1)]
[MENU] [DISPLAY]
USB
N W
VFO A
S1 3 5 7 9 20 40 60dB
P 5 10
O
Either these
appears when selected
BLANK
CH
VIII