![background image](http://html2.mh-extra.com/html/icom/ic-2720h/ic-2720h_instruction-manual_3566317037.webp)
20
3
BASIC OPERATION
New2001
3
■
Transmitting
☞
NOTE:
To prevent interference, listen on the channel be-
fore transmitting by pushing [DUP•MONI] for 1 sec., or
[
MONI
1(BANK)] on the microphone.
q
Select the main band. (p. 11)
w
Set the operating frequency. (pgs. 11–13)
• 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. 21 for details.
• “Si” may blinks instead of the sub band’s memory channel num-
ber indication according to the selected 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.
■
Selecting output power
The transceiver has 3 output power levels to suit your oper-
ating requirements. Low output powers during short-distance
communications may reduce the possibility of interference to
other stations and will reduce current consumption.
➥
Push [LOW•PRIO] once or twice to select the output
power.
*approx.
• The output power can be changed while transmitting.
The microphone can also be used to select output power.
➥
Push [
HIGH
4(DTCS)] for high output power;
[
MID
5(DTCS
S
)] for middle output power; and
[
LOW
6(DTMF)] for low output power.
• The output power can be changed via the microphone
during receive only.
HIGH
4
MID
5
LOW
6
IMPORTANT!
(for 50/35 W transmission)
:
The IC-2720H is equipped with protection circuit to protect
the power amplifier circuit from high SWR
(Standing Wave
Ratio)
and temperature. When a high SWR antenna or no
antenna is connected, or when the transceiver temperature
becomes extremely high, the transceiver reduces transmit
output power to 15 W (approx.) automatically.
CAUTION:
Transmitting without an antenna will damage
the transceiver.
S/RF INDICATOR
POWER OUTPUT
VHF/UHF
Taiwan
50 W/35 W
25 W
15 W*/15 W*
15 W*
5 W*/5 W*
5 W*
High:
Mid:
Low:
IC-2720H_2.qxd 03.5.13 9:45 Page 20 (1,1)