ICOM IC-703 Manuale Utente
50
5
FUNCTION FOR RECEIVE
This function automatically attenuates beat tones,
tuning signals, etc., even if they are moving. The au-
tomatic notch filter functions in SSB, FM and AM
modes.
tuning signals, etc., even if they are moving. The au-
tomatic notch filter functions in SSB, FM and AM
modes.
qSelect S4 (DSP menu).
• Push [DISPLAY] once or twice to select
S.
• Push [MENU] one or more times to select
S4.
wPush [
(F-1)
ANF] to toggle the automatic notch fil-
ter ON and OFF.
• “DSP” and “ANF” appear when the function is ON.
CH
VFO A
P
O
S1
5
5
3
7
9
20
40
10
60dB
USB
ANF
ANF
BLANK
DSP
S4 ANF NR NRL
[DISPLAY]
[MENU]
[F-1]
DANF (Automatic Notch Filter) function
■DSP Functions
(may require an optional unit depending on version—see p. 92)
DNR (Noise Reduction) function
This function reduces noise components and picks
out desired signals which are buried in noise. The re-
ceived AF signals are converted to digital signals and
then the desired signals are separated from the noise.
The noise reduction function is available for all oper-
ating modes.
out desired signals which are buried in noise. The re-
ceived AF signals are converted to digital signals and
then the desired signals are separated from the noise.
The noise reduction function is available for all oper-
ating modes.
qSelect S4 (DSP menu).
• Push [DISPLAY] once or twice to select
S.
• Push [MENU] one or more times to select
S4.
wPush [
(F-2)
NR] to toggle the noise reduction func-
tion ON and OFF.
• “DSP” and “NR” appear when the function is ON.
ePush [
(F-3)
NRL] to toggle the noise reduction level
indication ON and OFF.
rRotate the [M-CH] control to set the noise reduc-
tion level.
• Set the control for maximum readability. Deep rotation
results in audio signal masking or distortion.
S4 LEVEL 4 NRL
CH
VFO A
P
O
S1
5
5
3
7
9
20
40
10
60dB
USB
BLANK
DSP
NR
CH
VFO A
P
O
S1
5
5
3
7
9
20
40
10
60dB
USB
BLANK
DSP
S4 ANF NR NRL
NR
[DISPLAY]
[MENU]
[M-CH]
[F-2]
[F-3]
■Peak meter hold
The peak meter hold function freezes the highest dis-
played bar segment in any meter function for about
0.5 sec. so that you can more easily read the meter.
This function can be turned ON and OFF in initial set
mode (item “
played bar segment in any meter function for about
0.5 sec. so that you can more easily read the meter.
This function can be turned ON and OFF in initial set
mode (item “
23 PEAK HOLD” ; see p. 79).
S1
5
3
7
9
20
40
60dB
S1
5
3
7
9
20
40
60dB
Initial reception of a
signal results in an
S-meter reading of
40 dB.
signal results in an
S-meter reading of
40 dB.
The highest indica-
ted bar remains dis-
played for about 0.5
sec. even when the
signal strength de-
creases.
ted bar remains dis-
played for about 0.5
sec. even when the
signal strength de-
creases.
[EXAMPLE]:
INITIAL SET MODE
5