![background image](http://html.mh-extra.com/html/icom/ic-2820h/ic-2820h_instruction-manual_612069041.webp)
20
3
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
■
Receiving
q
Set the audio level for the main band.
➥
Push the desired band’s [MAIN•BAND].
➥
Push and hold [DUP•MONI] for 1 sec. to open the
squelch.
➥
Rotate the main band’s [VOL] to adjust the audio level.
➥
Push the [DUP•MONI] to close the squelch.
w
Set the squelch level.
➥
Rotate the main band’s [SQL] fully counterclockwise in
advance, then rotate the [SQL] clockwise until the noise
just disappears.
• When interference due to strong signals is received, rotate
[SQL] clockwise past 12 o'clock for attenuator operation. (p. 22)
e
Set the operating frequency in the main band.
(pgs. 15–17)
r
When receiving a signal on the selected frequency, squelch
opens and the transceiver emits audio.
• “BUSY” appears and the S/RF
indicator shows the relative
signal strength for the re-
ceived signal.
✔
CONVENIENT!
The main band’s audio and squelch level can also
be adjusted with [
VOL
Y
(TONE-1)]/[
VOL
Z
0(TONE-2)]
and [
SQL
Y
D(MUTE)]/[
SQL
Z
#(16KEY-L)], respectively.
• “VOL” for audio or “SQL” for squelch appears during set.
■
Transmitting
NOTE: To prevent interference, listen on the channel be-
fore transmitting by pushing and holding [DUP•MONI] for
1 sec., or [
MONI
1(BANK)] on the microphone.
q
Select the main band.
(p. 15)
w
Set the operating frequency.
(pgs. 15–17)
• Select output power if desired. See section at right for details.
e
Push and hold [PTT] to transmit.
• “
$
” appears.
• The S/RF indicator shows the output power selection.
• A one-touch PTT function is available. See p. 26 for details.
• “
” appears on the sub band screen according to the se-
lected frequency band.
r
Speak into the microphone using your normal voice level.
• DO NOT hold the microphone too close to your mouth or speak
too loudly. This may distort the signal.
t
Release [PTT] to return to receive.
IMPORTANT! (for 50 W transmission):
The IC-2820H is equipped with protection circuits to protect
the power amplifier circuit from high temperature. When the
transceiver temperature becomes extremely high, the trans-
ceiver reduces transmit output power to 5 W
(approx.)
auto-
matically.
CAUTION: Transmitting without an antenna may damage
the transceiver.
Show set level
SQL
Y
/
Z
D/#
VOL
Y
/
Z
M
/0
Appears when receiving a signal.
Summary of Contents for IC-2820H
Page 160: ...139 MEMO ...
Page 161: ...140 MEMO ...
Page 162: ...141 MEMO ...
Page 163: ...142 MEMO ...