Speech Compressor (Ssb); Auto Tuning Function (Am/Cw) - Icom IC-7610 Basic Manual

4
RECEIVING AND TRANSMITTING

Speech Compressor (SSB)

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.
1. Select the SSB mode.
2. Be sure the Speech Compressor is OFF.
L If it is ON, touch [COMP] to turn it OFF.
OFF
3. Touch the meter to display the ALC meter.
L Touching the meter sets the meter to Po, SWR, ALC,
COMP, V or I .
D D
Select the ALC meter.
4. Push to display the Multi-function menu.
MULTI
5. Touch [MIC GAIN], and then adjust it by speaking
into the microphone (p. 3-9) to where the ALC
meter reads within the 30 to 50% range of the
ALC zone.
6. Touch the meter again to display the COMP
meter.

Auto Tuning function (AM/CW)

When an off-frequency signal is received, the Auto
Tuning function tunes the signal within a ±500 Hz
range in the CW mode, or a ±5 kHz range in the AM
mode. You can use this function only in the CW and
AM modes.
1. Select the AM mode or CW mode.
2. Push to start the Auto Tuning.
AUTO TUNE
L While using the RIT function, the RIT frequency is
automatically tuned by this function.
7. Touch [COMP] for 1 second to turn the Speech
Compressor ON, and to display the COMP menu.
• The Speech Compressor Level setting is automatically
selected.
ON
8. 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.
NOTE: When receiving a weak signal, or receiving a signal
with interference, the Auto Tuning function may tune the
receiver to an undesired signal, or may not start tuning. In
such case, a warning beep sounds.
4-8
COMP zone
Displayed
while tuning