Basic Operation; Receiving; Transmitting - Icom IC-2820H Instruction Manual

■ 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.
rWhen receiving a signal on the selected frequency, squelch
opens and the transceiver emits audio.
Appears when receiving a signal.
✔ CONVENIENT!
The main band's audio and squelch level can also
SQLY/Z
be adjusted with [
VOL
D/#
and [ D(MUTE)]/[
Y
SQL
• "VOL" for audio or "SQL" for squelch appears during set.
VOLY/Z
M/0
Show set level
(pgs. 15–17)
• "BUSY" appears and the S/RF
indicator shows the relative
signal strength for the re-
ceived signal.
Y(TONE-1)]/[ Z 0(TONE-2)]
VOL
#(16KEY-L)], respectively.
Z
SQL

BASIC OPERATION

■ Transmitting

CAUTION: Transmitting without an antenna may damage
the transceiver.
NOTE: To prevent interference, listen on the channel be-
fore transmitting by pushing and holding [DUP•MONI] for
1 sec., or [ 1(BANK)] on the microphone.
MONI
q Select the main band.
(p. 15)
w Set the operating frequency.
• 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
matically.
3
(pgs. 15–17)
auto-
(approx.)
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