I Noise Blanker; D Noise Blanker Level Set Mode; I Agc Time Constant - Icom IC-703 Instruction Manual

I Noise blanker

The noise blanker reduces pulse-type noise such as
that generated by automobile ignition systems. This
function is not effective for FM mode or for non pulse-
type noise. If you don't want to use the noise blanker
for AM communications, the "
set mode must be turned OFF (ON is the default set-
ting—p. 80).
q Select
.
• Push [DISPLAY] once or twice to select .
• Push [MENU] one or more times to select
w Push [(F-2)
] to toggle the noise blanker ON and
OFF.
• "NB" appears when the noise blanker is turned ON.
e Push [
] for 1 sec. to enter the noise blanker
(F-2)
level set mode (below).
r Rotate the main dial to set the noise blanker level.
t Push [DISPLAY] to exit the noise blanker level set
mode.

D Noise blanker level set mode

While is selected in all modes, push [
1 sec. to enter the noise blanker level set mode.
This item adjusts the noise blanker level. The noise
blanker level can be adjusted from 0 to 10.
Although noise blanker level set mode is available in all modes, the noise blanker function is not effective for FM
mode.

I AGC time constant

The AGC (Automatic Gain Control) controls receiver
gain to produce a constant audio output level even
when the received signal strength is varied by fading,
etc. Use AGC slow for normal phone operation; AGC
fast for receiving data and searching for signals. AGC
time constant cannot be changed in FM mode.
q Select
.
• Push [DISPLAY] once or twice to select .
• Push [MENU] one or more times to select
w Push [(F-3)
] to toggle the AGC time constant
between fast and slow.
• "F " appears when the fast time constant is selected.
AGC
" item in initial
.
] for
(F-2)
USB
.
FUNCTION FOR RECEIVE
[MENU] [F-2] [DISPLAY]
USB
NB
VFO A
S1 3 5 7 9 20 40 60dB
CH
P 5 10
O
The default is 5.
[F-3]
[MENU] [DISPLAY]
USB
F
AGC
VFO A
S1 3 5 7 9 20 40 60dB
CH
P 5 10
O
5
Main dial
Appears when
the noise blanker
is turned ON.
5
Appears when
AGC fast is
selected.
48