Agc Function; D Selecting The Preset Value; D Adjusting The Agc Time Constant; D Setting The Agc Time Constant Preset Value - Icom IC-7700 Instruction Manual

■ AGC function

[AGC] control
AGC VR
D D Selecting the preset value
D D Adjusting the AGC time constant
D D Setting the AGC time constant preset value
• Selectable AGC time constant
Mode Default Selectable AGC time constant
0.3 (FAST)
0.1, 0.2, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
SSB 2.0 (MID)
2.5, 3.0, 4.0, 5.0, 6.0
6.0 (SLOW)
0.1 (FAST)
0.1, 0.2, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
CW 0.5 (MID)
2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
0.1 (FAST)
RTTY 0.1, 0.2, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
0.5 (MID)
PSK 2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
3.0 (FAST)
0.3, 0.5, 0.8, 1.2, 1.6, 2.0, 2.5, 3.0,
AM 5.0 (MID)
4.0, 5.0, 6.0, 7.0, 8.0
7.0 (SLOW)
FM 0.1 (FAST) Fixed
AGC
(unit: sec.)
FUNCTIONS FOR RECEIVE
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.
q Select any non-FM mode.
w Push [AGC]
(MF5)
AGC medium (MID) or AGC slow.
• Push and hold
function OFF.
q Select any non-FM mode.
w Push
AGC VR
the AGC time constant.
• [AGC VR] indicator above the switch lights green.
q Select any non-FM mode.
w Push and hold [AGC]
set mode.
e Push [AGC]
(MF5)
constant.
r Rotate the main dial to set the desired time constant
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]
value.
t Push [AGC]
(MF5)
y Rotate the main dial to set the desired time constant
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]
value.
u Push [AGC]
(MF5)
i Rotate the main dial to set the desired time constant
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]
value.
o Select another non-FM mode. Repeat steps e to i
if desired.
!0 Push
EXIT/SET
5-11
several times to select AGC fast,
for 1 sec. to turn the AGC
AGC VR
, then rotate [AGC] control to adjust
for 1 sec. to enter AGC
(MF5)
several times to select FAST time
for 1 sec. to select a default
F-4
to select medium time constant.
for 1 sec. to select a default
F-4
to select slow time constant.
for 1 sec. to select a default
F-4
to exit the AGC set mode screen.
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