Speech Compressor; Transmit Filter Width Setting - Icom IC-7600 Instruction Manual

■ Speech compressor

<MODE> SSB
The speech compressor increases average RF output
power, improving signal strength and readability.
q Push [SSB] to select the USB or LSB mode.
w Hold down [COMP] (MF7) for 1 second to select
the COMP TBW set screen.
e Adjust the [MIC GAIN] control so that the ALC
meter reads within the ALC zone, whether or not
you speak softly or loudly.
r Push [COMP] (MF7) to turn the speech
compressor ON.
t While speaking into the microphone, rotate the
main dial, so that the COMP meter reads within the
COMP zone (10 to 20 dB range) for your normal
voice level.
When the COMP meter peaks exceed 20 dB,
your transmitted voice may be distorted.
y Push [COMP] (MF7) or [EXIT/SET] to exit COMP
TBW set screen.
u Adjust the drive gain to set the ALC meter reading
within the 30 to 50% range of the ALC scale.
(p. 38)

■ Transmit filter width setting

<MODE> SSB
The transmit filter width for the SSB mode can be
selected between wide, middle and narrow.
q Push [SSB] to select the USB or LSB mode.
w Hold down [COMP] (MF7) for 1 second to select
the COMP TBW set screen.
e Push [COMP] (MF7) to turn the speech
compressor ON or OFF.
r Push [TBW] (F-3) several times to select the
desired transmit filter width between wide, middle
and narrow.
• The filter can be independently set on the speech
compressor function is ON or OFF.
• The following filters are specified as the default. Each
of the filter width can be re-set in the level set mode.
(p. 130)
WIDE : 100 Hz to 2.9 kHz
MI : 300 Hz to 2.7 kHz
NAR : 500 Hz to 2.5 kHz
t Push [COMP] (MF7) or [EXIT/SET] to exit COMP
TBW set screen.
RECEIVE AND TRANSMIT
COMP
[MIC GAIN]
SSB
• COMP/TBW set screen
Speech compressor is OFF
Speech compressor is ON
COMP
SSB F-3
TBW
"WIDE" setting
4
Main dial
EXIT/SET
EXIT/SET
4
94