Transmit Filter Width Setting (Ssb Only); Speech Compressor - Icom IC-756PROIII Instruction Manual

■ Transmit filter width setting (SSB only)
The transmit filter width for SSB mode can be se-
lected from wide, middle and narrow.
[COMP]

■ Speech compressor

The speech compressor increases average RF out-
put power, improving signal strength and readability
in SSB mode.
• Speech compressor
q Select USB or LSB mode.
w Push [COMP] momentarily to turn the speech
compressor ON and OFF.
e Push [COMP] for 1 sec. to select between narrow,
middle or wide transmit filter.
• Transmit filter width: (see above for details)
NAR 2.0 kHz
MID 2.4 kHz
WIDE 2.8 kHz
• Compression level setting
q Select USB or LSB mode.
w Preset the transceiver as follows:
'COMP' function
'METER' function
[MIC GAIN] control
[COMP] control
[RF POWER] control : Max. counterclockwise
e Transmit at your normal voice level.
r Adjust the [MIC GAIN] control so that the ALC
meter reads within the ALC zone, whether or not
you speak softly or loudly.
t Push [COMP] momentarily to turn the speech
compressor ON.
y Push [METER] once to select the COMP meter.
u Adjust the [COMP] control so that the COMP
meter reads within 10 dB and 20 dB.
: OFF
: ALC
: Center position
: Center position
FUNCTION FOR TRANSMIT
➥ During USB or LSB mode selection, push [COMP]
for 1 sec. several times to select the desired trans-
mit filter width from wide, middle and narrow.
• The filter functions regardless of the speech compres-
sor use.
• The following filters are specified as the default. Each
of the filter width can be re-set in level set mode.
(pgs. 95, 96)
WIDE : 100 Hz to 2.9 kHz
MID : 300 Hz to 2.7 kHz
NAR : 500 Hz to 2.5 kHz
5
1
25 50
10
0
S
2
Po
1.5
1
10
SWR 0
COMP
ALC
When the ALC meter peaks above the ALC zone,
your transmitted voice may be distorted.
[METER] [COMP] (switch)
[RF POWER] [COMP] (control)
[MIC GAIN]
COMP meter
9
+ 20
+ 40
+ 60dB
100
3
20
dB
6
6
68