Duplex Operation - Icom IC-R2500 Instruction Manual

4
BASIC OPERATION

■ Duplex operation

Duplex communication uses two different frequencies for
transmitting and receiving. Generally, duplex is used in com-
munication through a repeater, some utility communications,
etc.
During duplex operation, the transmit station frequency is
shifted from the receive station frequency by the offset fre-
quency. Repeater information (offset frequency and shift di-
rection) can be programmed into memory channels. (p. 24)
D D Setting
qPush the desired band's [MAIN] to select the main band.
w Push [SET•SKIP] to enter set mode.
ePush [SET•SKIP] or [ATT•PRIO] several times until the
duplex direction setting item "OFF
" appears.
dP
[SET•SKIP]
[ATT•PRIO]
[DIAL]
rRotate the main band's [DIAL] to select the duplex direc-
tion, "DUP– " or "DUP+
dP
19
[
," "DUP– " or "DUP+
dP dP
."
dP
tPush [SET•SKIP] once to advance to the offset frequency
setting item.
yRotate the main band's [DIAL] to set the desired offset fre-
quency within 0.000–1000.000 MHz range.
• The tuning step, selected in VFO mode, is used for setting.
• Push [MHz•TS] then rotate the main band's [DIAL] to change
the frequency in 10 MHz steps, or push again then rotate the
main band's [DIAL] to change the frequency in 1 MHz steps.
(Each push toggles 1MHz, 10 MHz or selected tuning steps.)
uPush any key for main band to exit set mode.