ICOM 361500 用户手册
7-4
7
FUNCTIONS FOR RECEIVE
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)
RTTY
0.1 (FAST)
0.1, 0.2, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
PSK
0.5 (MID)
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
• Selectable AGC time constant
(unit: sec.)
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.
produce a constant audio output level even when the
received signal strength varies greatly.
The transceiver has three preset AGC characteristics
(time constant: fast, mid, slow) for non-FM mode.
(time constant: fast, mid, slow) for non-FM mode.
The FM mode AGC time constant is fixed as ‘FAST’
(0.1 seconds) and AGC time constant cannot be se-
lected.
lected.
Selecting the preset value
D
q
Select non-FM mode.
w
Push [AGC] several times to select AGC fast, AGC
medium (MID) or AGC slow.
• Hold down [AGC VR] for 1 second to turn the AGC func-
tion OFF.
Adjusting the AGC time constant
D
q
Select non-FM mode.
w
Push [AGC VR], then rotate [AGC] control to adjust
the AGC time constant.
• [AGC VR] indicator above the switch lights green.
q
Select the desired mode (not FM mode).
w
Hold down [AGC] for 1 second to enter AGC set
mode.
e
Push [AGC] several times to select FAST time con-
stant.
r
Rotate [MAIN DIAL] to set the desired time constant
for ‘AGC FAST.’
• AGC time constant can be set between 0.1 to 8.0 sec-
onds (depends on mode) or turned OFF.
• Hold down [DEF](F) for 1 second to select a default
value.
t
Push [AGC] to select medium time constant.
y
Rotate [MAIN DIAL] to set the desired time constant
for ‘AGC MID.’
• AGC time constant can be set between 0.1 to 8.0 sec-
onds (depends on mode) or turned OFF.
• Hold down [DEF](F) for 1 second to select a default
value.
u
Push [AGC] to select slow time constant.
i
Rotate [MAIN DIAL] to set the desired time constant
for ‘AGC SLOW.’
• AGC time constant can be set between 0.1 to 8.0 sec-
onds (depends on mode) or turned OFF.
• Hold down [DEF](F) for 1 second to select a default
value.
o
Select another mode (not FM). Repeat steps e to
i
if desired.
!0
Push [EXIT/SET] to exit the AGC set mode screen.
[EXIT/SET]
[AGC VR]
[AGC] control
(F) Function keys
AGC indicator
[MAIN DIAL]
(
≈
) Multi-function keys
• When selecting “AGC VR”
• AGC screen
• When selecting “AGC-MID”
Setting the AGC time constant preset value
D