I Speech Compressor; I Transmit Filter Width Selection - Icom IC-746PRO Instruction Manual

I Speech compressor

The speech compressor increases average RF output
power, improving signal strength and readability in
SSB, AM or FM.
When adjusting the compression level, it is necessary
to turn the COMP meter ON in the set mode, in ad-
vance (p. 82).
• In SSB mode
q Select USB or LSB mode and adjust [MIC GAIN] to
a suitable level.
w While
is selected, push [F3
speech compressor ON.
• "COMP" appears.
e Push [F3
] for 1 sec. to select compression
level set mode.
r While speaking into the microphone, rotate the tun-
ing dial, so that the COMP meter reads within the
COMP zone with your normal voice level.
• Push [F3] for 1 sec. to select the default value.
When the COMP meter peaks above the COMP
zone, your transmitted voice may be distorted.
t Push [MENU] to return to
• In AM/FM mode
q While
is selected, push [F3
speech compressor ON.
• "COMP" appears.
w Push [F3
] for 1 sec. and set the compression
level as "1" in advance.
e While speaking into the microphone, rotate [MIC
GAIN], so that the COMP meter does not exceed
the center dot whether you speak softly or loudly.
r While speaking into the microphone, rotate the tun-
ing dial, so that the COMP meter reads within the
COMP zone with your normal voice level.
• Push [F3] for 1 sec. to select the default value.
When the COMP meter peaks above the COMP
zone, your transmitted voice may be distorted.
t Push [MENU] to return to
I Transmit filter width selection
The transmit filter width for SSB mode can be selected
from wide, middle and narrow.
q Select USB or LSB mode.
w Push [MENU] to select
e Push [F4
] for 1 sec. to select the transmission
passband width.
• One of "
" is displayed for approx. 1 sec.
• Transmit filter width: NAR
MID
WIDE
] to turn the
.
] to turn the
.
, if necessary.
," " " or "
2.2 kHz
2.4 kHz
2.8 kHz
FUNCTIONS FOR TRANSMIT
Compressor indicator
Shows compression level
COMP level zone
*The SWR meter functions as the COMP meter
when COMP meter is set to ON in the set mode.
Adjust [MIC GAIN], so that the COMP meter does
not exceed this zone.
Adjust the
that the COMP meter does not exceed the COMP
level zone.
(SSB mode only)
F 1 F 2
F 1 F 2
The selected transmit filter width
is displayed for approx. 1 sec.
Push [F4] for 1 sec. to select the transmit filter width.
ALC meter
COMP meter
with the tuning dial so
F 3 F 4 F 5
Push [F4]
F 3 F 4 F 5
6
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