I Transmitting; I Selecting Output Power - Icom IC-2720H Instruction Manual

I Transmitting

CAUTION: Transmitting without an antenna will damage
the transceiver.
NOTE: To prevent interference, listen on the channel be-
fore transmitting by pushing [DUP•MONI] for 1 sec., or
[ 1(BANK)] on the microphone.
MONI
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.
IMPORTANT! (for 50/35 W transmission):
The IC-2720H is equipped with protection circuit to protect
the power amplifier circuit from high SWR
and temperature. When a high SWR antenna or no
Ratio)
antenna is connected, or when the transceiver temperature
becomes extremely high, the transceiver reduces transmit
output power to 15 W (approx.) automatically.

I 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.
S/RF INDICATOR
High:
Mid:
Low:
• The output power can be changed while transmitting.
The microphone can also be used to select output power.
HIGH
4
MID
5
(Standing Wave
LOW
6
BASIC OPERATION
POWER OUTPUT
VHF/UHF
50 W/35 W
15 W*/15 W*
5 W*/5 W*
➥ Push [
4(DTCS)] for high output power;
HIGH
[ 5(DTCSS)] for middle output power; and
MID
[ 6(DTMF)] for low output power.
LOW
• The output power can be changed via the microphone
during receive only.
3
3
Taiwan
25 W
15 W*
5 W*
*approx.
20