4-3
BASIC MANUAL
4
RECEIVING AND TRANSMITTING
AGC function control
SSB, CW, RTTY, and AM modes
The Automatic Gain Control (AGC) function
controls receiver gain to produce a constant
audio output level, even when the received
signal strength greatly varies.
LEach mode and band memorizes the AGC setting.
DSelecting the AGC time constant
preset value
The transceiver has FAST, MID, and SLOW
preset AGC settings for all modes, except for
the FM, WFM, and DV modes.
1. Select the operating mode. (Example: SSB)
2. Push
.
• Opens the FUNCTION screen.
3. Touch [AGC] to select the desired time
constant.
LTouching [AGC] selects FAST, MID, or SLOW.
LFor FM, WFM, and DV modes, FAST is fixed.
4. To close the FUNCTION screen, push .
NOTE: While you are receiving weak signals,
and a strong signal is momentarily received,
the AGC function quickly reduces the receiver
gain. When that signal disappears, the
transceiver may not receive the weak signal
because of the AGC action. In that case,
select FAST, or touch [AGC] for 1 second to
open the AGC screen, and then select OFF.
DSetting the AGC time constant
You can set the preset AGC time constant to the
desired value.
1. Select the operating mode. (Example: SSB)
2. Push
.
• Opens the FUNCTION screen.
3. Touch [AGC] for 1 second.
• Opens the AGC (SSB) screen.
4. Touch FAST, MID, or SLOW. (Example: MID)
5. Rotate to set the time constant.
6. To close the AGC (SSB) screen, push
.
Selectable AGC Time constant (unit:
seconds)
Mode Default Adjustable time constant
LSB
USB
0.3 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8,
1.2, 1.6, 2.0, 2.5, 3.0, 4.0,
5.0, or 6.0
2.0 (MID)
6.0 (SLOW)
CW/RTTY
0.1 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8,
1.2, 1.6, 2.0, 2.5, 3.0, 4.0,
5.0, or 6.0
0.5 (MID)
1.2 (SLOW)
AM
3.0 (FAST)
OFF, 0.3, 0.5, 0.8, 1.2, 1.6,
2.0, 2.5, 3.0, 4.0, 5.0, 6.0,
7.0, or 8.0
5.0 (MID)
7.0 (SLOW)
FM/WFM/DV 0.1 (FAST) Fixed
You can reset to the default settings
by touching this key for 1 second.
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