4
RECEIVING AND TRANSMITTING
4-2
AGC function control
SSB, CW, RTTY and AM modes
The AGC (Automatic Gain Control) controls receiver
gain to produce a constant audio output level, even
when the received signal strength greatly varies.
L
Each band memorizes the AGC setting.
D
Selecting the AGC time constant
preset value
The transceiver has FAST, MID and SLOW preset
AGC settings for all modes, except for the FM, DV
and DD modes.
1. Select the operating mode.
(Example: SSB)
2. Push
FUNCTION
.
•Opens the FUNCTION screen.
3.
Touch [AGC] to select the desired time constant.
L
Touching [AGC] selects FAST, MID or SLOW.
L
For FM, DV and DD modes, FAST is fixed.
4.
To close the FUNCTION screen, push
EXIT
.
D
Setting 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
FUNCTION
.
•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
MAIN DIAL
to set the time constant.
6. To close the AGC (SSB) screen, push
EXIT
.
•
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
0.1
(
FAST
)
Fixed
DV
0.1
(
FAST
)
Fixed
DD
0.1
(
FAST
)
Fixed
You can reset
to the default
settings by
touching this key
for 1 second.
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.