Operation Manual

■ AGC function
The AGC (auto gain control) controls receiver gain to
produce a constant audio output level even when the
received signal strength varies greatly.
The transceiver has 3 preset AGC characteristics
(time constant: fast, mid, slow) for non-FM mode.
The FM mode AGC time constant is fixed as
‘FAST’ (0.1 sec.) and AGC time constant cannot
be changed.
D Selecting the preset value
q Select any non-FM mode.
w Push [AGC] (MF5) several times to select AGC
fast, AGC medium (MID) or AGC slow.
F-4
EXIT/SET
Main dial
DEF
[AGC]
D Setting the AGC time constant preset value
q Select any non-FM mode.
w Push and hold [AGC] (MF5) for 1 sec. to enter
AGC set mode.
e Push [AGC] (MF5) several times to select FAST
time constant.
r Rotate the main dial to set the desired time con-
stant for ‘AGC FAST.’
• AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
• Push and hold [DEF] (F-4) for 1 sec. to select a default
value.
t Push [AGC] (MF5) to select medium time con-
stant.
y Rotate the main dial to set the desired time con-
stant for ‘AGC MID.’
• AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
• Push and hold [DEF] (F-4) for 1 sec. to select a default
value.
u Push [AGC] (MF5) to select slow time constant.
i Rotate the main dial to set the desired time con-
stant for ‘AGC SLOW.’
• AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
• Push and hold [DEF] (F-4) for 1 sec. to select a default
value.
o Select another non-FM mode, then repeat steps e
to i if desired.
!0 Push [EXIT/SET] to exit the AGC set mode screen.
• AGC set mode screen
• Selectable AGC time constant (unit: sec.)
Mode Default Selectable AGC time constant
SSB
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, 6.0
2.0 (MID)
6.0 (SLOW)
CW
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, 6.0
0.5 (MID)
1.2 (SLOW)
RTTY
PSK
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, 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, 8.0
5.0 (MID)
7.0 (SLOW)
FM 0.1 (FAST) F
ixed
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