Transmit Filter Width Setting (Ssb Only); Speech Compressor (Ssb Only) - Icom IC-7700 Instruction Manual

■ Transmit filter width setting
COMP
■ Speech compressor
[MIC]
METER COMP
[DRIVE] [COMP] control
COMP zone
5
1
5
S
0
I
10
D
0
Po
1.5
10
1
0
SWR
COMP
ALC
(SSB only)
9 +
20
+
40
+
60dB
10
50 100 150
15
200
A
250
∞
2
3
W
20
dB
44 52V V
D
FUNCTIONS FOR TRANSMIT
(SSB only)
The transmit filter width for SSB mode can be selected
from wide, middle and narrow.
➥ During USB or LSB mode selection, push and hold
[COMP]
(MF6)
desired transmit filter width from wide, middle and
narrow.
• The filter can be independently set on the speech com-
pressor function is ON and OFF.
• The following filters are specified as the default. Each of
the filter width can be re-set in level set mode.
(p. 12-6)
WIDE : 100 Hz to 2.9 kHz
MID : 300 Hz to 2.7 kHz
NAR : 500 Hz to 2.5 kHz
The speech compressor increases average RF output
power in SSB mode only, improving signal strength
and readability.
q Select USB or LSB mode and adjust [MIC] to a suit-
able level.
• Push [METER]
meter for microphone gain adjustment.
w Push [COMP]
ON.
e Push [METER]
meter.
r While speaking into the microphone, rotate [COMP]
control, 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.
t Push [METER]
meter.
y While speaking into the microphone, rotate [DRIVE],
so that the ALC meter reads within the 30 to 50%
range of the ALC zone with your normal voice level.
✔ For your convenience
Push and hold [METER]
multi-function meter that can check the ALC and
COMP level at a glance.
6-5
for 1 sec. several times to select the
several times to select the ALC
(MF2)
to turn the speech compressor
(MF6)
once to select the COMP
(MF2)
5 times to select the ALC
(MF2)
for 1 sec. to display the
(MF2)
6