Setting The Speech Compressor - Icom IC-9700 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 .
FUNCTION
• Opens the FUNCTION screen.
3. Be sure the Speech Compressor is OFF.
L If it is ON, touch [COMP] to turn it OFF.
4. Push to close the FUNCTION screen.
EXIT
5. Touch the Multi-function meter to display the ALC
meter.
L Touching the Multi-function meter sets the meter to
Po, SWR, ALC, COMP, V
ALC meter
6. Push to display the Multi-function menu.
MULTI
7. Touch [MIC GAIN], and then adjust it by speaking
into the microphone to where the ALC meter
reads within the 30 to 50% range of the ALC zone.
ALC zone
OFF
or I .
D D
D Using the Speech Compressor function
1. Touch the Multi-function meter again to display
the COMP meter.
2. Push
FUNCTION
• Opens the FUNCTION screen.
3. Touch [COMP] to turn it ON.
4. Touch [COMP] for 1 second.
5. While speaking into the microphone at your
normal voice level, 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.
Speech Compressor is ON
COMP zone
6. To close the COMP menu, push
4-8
.
.
EXIT
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