Icom IC-905, Основное руководство

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4-10
BASIC MANUAL
4
RECEIVING AND TRANSMITTING
Setting the Speech Compressor
SSB mode
The Speech Compressor increases the average RF
output power, improving readability at the receiving
station. This function compresses the transmitter
audio input to increase the average audio output level.
L
The function is effective for long-distance
communication, or when propagation conditions are
poor.
D
Setting before using the Speech
Compressor function
1. Select the SSB mode. (Example: USB)
2. Push .
• Opens the FUNCTION screen.
3. Be sure the Speech Compressor is OFF.
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If it is ON, touch [COMP] to turn it OFF.
D
Using the Speech Compressor function
1. Touch the Multi-function meter again to display
the COMP meter.
2. Push .
• Opens the FUNCTION screen.
3. Touch [COMP] for 1 second.
• Turns ON the Speech Compressor function and
opens the Multi-function menu.
4. While speaking into the microphone at your
normal voice level, rotate to adjust the
Speech Compressor level to where the COMP
meter reads within the COMP zone (10 to 20 dB
range).
L
If the COMP meter peaks exceed the COMP zone,
your transmitted voice may be distorted.
4. Push to close the FUNCTION screen.
5. Touch the Multi-function meter until the ALC meter
is displayed.
L
Touching the Multi-function meter sets the meter to
Po, SWR, ALC, COMP, Vd, or Id.
OFF
6. Push to open the Multi-function menu.
7. Touch [MIC GAIN], and then rotate to
adjust it by speaking into the microphone to where
the ALC meter reads within the 30 to 50% range
of the ALC zone.
ALC meter
ALC zone
5. To close the Multi-function menu, push .
Speech Compressor is ON
COMP zone