Icom IC-7610 Instruction Manual basic - Page 38

Speech Compressor (SSB), Auto Tuning function (AM/CW), Auto

Get Icom IC-7610 PDF manuals and user guides View all Icom IC-7610 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 38 highlights

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. LThe 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. LIf it is ON, touch [COMP] to turn it OFF. 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. OFF 3. Touch the meter to display the ALC meter. LTouching the meter sets the meter to Po, SWR, ALC, COMP, VD or ID. Select the ALC meter. 4. Push MULTI to display the Multi-function menu. 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. 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). LIf the COMP meter peaks exceed the COMP zone, your transmitted voice may be distorted. COMP 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 AUTO TUNE to start the Auto Tuning. LWhile using the RIT function, the RIT frequency is automatically tuned by this function. Displayed while tuning 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

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
4
RECEIVING AND TRANSMITTING
4-8
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.
3.
Touch the meter to display the ALC meter.
L
Touching the meter sets the meter to Po, SWR, ALC,
COMP, V
D
or I
D
.
4. Push
MULTI
to display the Multi-function menu.
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.
OFF
Select the ALC meter.
6.
Touch the meter again to display the COMP
meter.
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.
COMP zone
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.
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
AUTO
TUNE
to start the Auto Tuning.
L
While using the RIT function, the RIT frequency is
automatically tuned by this function.
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.
Auto
Tuning function (AM/CW)
Displayed
while tuning
ON