Agc Function; D Selecting The Preset Value; D Adjusting The Agc Time Constant; D Setting The Agc Time Constant Preset Value - Icom IC-R9500 Instruction Manual

5
RECEIVE FUNCTIONS

■ AGC function

[AGC VR] indicator
[AGC VR/OFF]
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
FM 0.1 (FAST) Fixed
WFM 0.1 (FAST) Fixed
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)
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)
0.1, 0.2, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
FSK 0.5 (MID)
2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
P25 0.1 (FAST) Fixed
[AGC] control
[AGC]
(unit: sec.)
The AGC (auto gain control) controls receiver gain to
produce a constant audio output level even when the
received signal strength varies greatly.
The receiver has 3 preset AGC characteristics (time
constant: fast, mid, slow) for non-FM/WFM or P25
mode.
The FM/WFM or P25 mode AGC time constant is
fixed as 'FAST' (0.1 sec.) and AGC time constant
cannot be selected.
q Select non-FM/WFM or P25 mode.
w Push [AGC] several times to select AGC fast, AGC
medium (MID) or AGC slow.
• Push and hold [AGC VR/OFF] for 1 sec. to turn the AGC
function OFF.
q Select non-FM/WFM or P25 mode.
w Push [AGC VR/OFF] once or twice to select AGC
volume (VR), then rotate [AGC] control to adjust the
AGC time constant.
• [AGC VR] indicator lights green and "VR" appears in-
stead of "FAST," "MID" or "SLOW."
q Select the desired mode (not FM/WFM or P25
mode).
w Push and hold [AGC] for 1 sec. to enter AGC set
mode.
e Push [AGC] several times to select FAST time con-
stant.
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 [F-4•DEF] for 1 sec. to select a default
value.
t Push [AGC] to select medium time constant.
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 [F-4•DEF] for 1 sec. to select a default value.
u Push [AGC] to select slow time constant.
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 [F-4•DEF] for 1 sec. to select a default value.
o Select another mode (not FM/WFM or P25). Repeat
steps e to i if desired.
!0 Push [EXIT/SET] to exit the AGC set mode screen.
5-10