Icom IC-E2820 - Block Diagrams; Left Side Block Diagram

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BASIC OPERATION
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■ Sub-band mute/busy beep
The sub-band mute function automatically cuts out sub-band
audio signals when both main and sub-band signals are re-
ceived simultaneously.
While operating on the main band, a beep sounds to inform
you that a signal was received on the sub-band.
qPush [F•]to display the function guide.
wPush [MENU](V/MHz•SCAN)
(Right band’s) to enter MENU
screen.
eRotate [DIAL] to select “SOUNDS” then push
[MAIN•BAND].
rRotate [DIAL] to select “SUB BAND MUTE” or “SUB
BAND BEEP” then push [MAIN•BAND].
tRotate [DIAL] to turn the sub-band mute or sub-band beep
function ON and OFF then push [MAIN•BAND].
yPush [BACK](V/MHz•SCAN) (Right band’s)
twice to exit set
mode.
uWhen a signal is received on MAIN band, “ ” ap-
pears as below.
■ Monitor function
This function is used to listen to weak signals without disturb-
ing the squelch setting.
➥ After pushing [MAIN•BAND]
, push and hold [DUP•MONI]
for 1 sec. to open the squelch.
• “BUSY” blinks.
• Push [DUP•MONI] again to cancel the function.
➥ Push [ MONI 1(BANK)] to open the squelch.
• Push [BAND] to select the desired band (left or right)
as the main band in advance.
• Push [ MONI 1(BANK)] again to cancel the function.
NOTE: When the [SQL] adjustment is set too far clock-
wise, (12–5 o’clock position) the squelch attenuator is acti-
vated. To monitor weak signals on the operating frequency,
deactivate the squelch attenuator function. See page 22
for details.
MONI
1
[DUP•MONI]
Appears when a signal is received on MAIN band.