ICOM IC-703 Benutzerhandbuch

VII

QUICK REFERENCE GUIDE

c. Automatic  Notch: The automatic notch will track

up to heterodynes. This is helpful for eliminating
annoying transmitter “tune up” tones on any band,
and to minimize continuous tone “heterodynes” en-
countered on the 40 meter phone bands at night,
for example. Once selected an icon will appear
“ANF” on the display.

qSelect S4.

• Push [DISPLAY] once or twice to select 

S.

• Push [MENU] one or more times to select 

S4.

wPush [(F-1)ANF] to activate the automatic notch fil-

ter.

NOTE: Your IC-703 is equipped with an AGC cir-
cuit. This allows the DSP to filter out interfering sig-
nals and QRM, while also taking this interference
out of the AGC. Bottom line, this will either elimi-
nate or greatly reduce the pumping of the AGC
from the interfering signal.

Hint!
The Automatic Notch will not operate in the CW,
RTTY or SSB-D modes.

S4 ANF NR  NRL

ANF

ANF

Appear

[(F-1)]

[DISPLAY]

[MENU]

d. Noise  Blanker: The noise blanker function re-

duces pulse-type noise such as that generated by
automobile ignition systems. This function is not ef-
fective for FM modes or for non pulse-type noise.

qSelect M3.

• Push [DISPLAY] once or twice to select 

M.

• Push [MENU] one or more times to select 

M3.

wPush [(F-2)NB] to activate the noise blanker.

• “NB” appears when the function is ON.

e. Adjusting the Noise Blanker: The noise blanker

is completely variable on how much of the Noise
Blanker is used.

qPush [

(F-2)

NB] for 1 sec. to enter the noise blanker

level set mode.

wRotate the main dial to set the noise blanker level.

ePush [DISPLAY] to exit the noise blanker level set

mode.

Hint!
When using the noise blanker, received signals
may be distorted if the noise blanker level setting
has been too high.

N1 NB LEVEL

[(F-2)]

Main dial

[DISPLAY]

M3 FIL NB  MET

[(F-2)]

[MENU]

[DISPLAY]

Appears