Agc Function; D Agc Time Constant Selection; D Setting The Agc Time Constant - Icom IC-7000 Instruction Manual

■ AGC function

The AGC (auto gain control) controls receiver gain to
produce a constant audio output level even when the
received signal strength is varied by fading, etc.
The transceiver has 3 AGC characteristics (time
constant; fast, mid, slow) for non-FM/WFM mode.

D AGC time constant selection

q Select non-FM/WFM mode with [MODE].
w Select M-3.
• Hold down [MENU/GRP] for 1 second once or twice
to select the menu group M.
• Push [MENU/GRP] momentarily one or more times
to select the menu M-3.
e Push [F-3 AGC] several times to select AGC fast,
AGC medium (MID) AGC slow or AGC OFF.
• " ," " ," "
AGC fast, AGC medium (MID), AGC slow or AGC
OFF is selected, respectively.
appears when AGC time constant
" " (OFF)
OFF is set for one of FAST, MID, SLOW setting in
AGC Set mode.

D Setting the AGC time constant

q Select the desired mode other than FM/WFM
modes.
w Select M-3.
• Hold down [MENU/GRP] for 1 second once or twice
to select the menu group M.
• Push [MENU/GRP] momentarily one or more times
to select the menu M-3.
e Hold down [F-3 AGC] for 1 second to enter the
AGC Set mode.
r Push one of [F-2 FAST], [F-3 MID], [F-4 SLOW]
to select the desired AGC time constant.
t Rotate [DIAL] to set the desired time constant.
• AGC time constants can be selected between 0.1 to
8.0 seconds (depends on mode) or turned OFF.
• Hold down [F-2 FAST], [F-3 MID] or [F-4 SLOW] for
1 second to select a default value each for fast, mid.
and slow, respectively.
y Select another mode other than FM/WFM. Repeat
steps r and t, if desired.
• See table to the right for available time constants.
u Push [Z( )] to exit the AGC Set mode.
menu/grp
" or " " appears when
FUNCTIONS FOR RECEIVE
The FM/WFM modes AGC time constant is fixed as
'FAST' (0.1 seconds) and AGC time constant
cannot be selected.
[MENU/GRP] [F-3]
[MENU/GRP] [F-2] [F-3] [F-4]
• Selectable AGC time constant
Mode Default Selectable AGC time constant
0.3 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8, 1.2,
SSB 2.0 (MID)
1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0
6.0 (SLOW)
0.1 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8, 1.2,
CW 0.5 (MID)
1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
0.1 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8, 1.2,
RTTY 0.5 (MID)
1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
3.0 (FAST)
OFF, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
AM 5.0 (MID)
2.5, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0
7.0 (SLOW)
FM/WFM 0.1 (FAST) Fixed
5
5
[DIAL]
(unit: sec.)
74