Icom IC-2820H Instruction Manual - Page 41

Basic Operation

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3 BASIC OPERATION ■ 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) rWhen receiving a signal on the selected frequency, squelch opens and the transceiver emits audio. • "BUSY" appears and the S/RF indicator shows the relative Appears when receiving a signal. signal strength ceived signal. for the re- ✔CONVENIENT! The main band's audio and squelch level can also SQLY/Z be adjusted with [VOLY(TONE-1)]/[VOLZ 0(TONE-2)] D/# and [SQLY D(MUTE)]/[SQLZ #(16KEY-L)], respectively. • "VOL" for audio or "SQL" for squelch appears during set. VOLY/Z M/0 Show set level ■ Transmitting 1 CAUTION: Transmitting without an antenna may damage 2 the transceiver. 3 NOTE: To prevent interference, listen on the channel be- 4 fore transmitting by pushing and holding [DUP•MONI] for 5 1 sec., or [MONI 1(BANK)] on the microphone. 6 q Select the main band. (p. 15) w Set the operating frequency. (pgs. 15-17) 7 • Select output power if desired. See section at right for details. e Push and hold [PTT] to transmit. 8 • "$" appears. 9 • The S/RF indicator shows the output power selection. • A one-touch PTT function is available. See p. 26 for details. 10 •" " appears on the sub band screen according to the se- 11 lected frequency band. r Speak into the microphone using your normal voice level. 12 • DO NOT hold the microphone too close to your mouth or speak too loudly. This may distort the signal. 13 t Release [PTT] to return to receive. 14 IMPORTANT! (for 50 W transmission): 15 The IC-2820H is equipped with protection circuits to protect 16 the power amplifier circuit from high temperature. When the transceiver temperature becomes extremely high, the trans- 17 ceiver reduces transmit output power to 5 W (approx.) auto- 18 matically. 19 20

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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 ampli
fi
er 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.