Duplex Operation - Icom IC-R2500 Instruction Manual

Communication receiver

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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. 16))

D D Setting

q Push [SET•SKIP] to enter set mode.

wPush [SET•SKIP] or [ATT•PRIO] several times until the

duplex direction setting item "OFF

" appears.

[SET•SKIP]

[ATT•PRIO]

[DIAL]

eRotate [DIAL] to select the duplex direction, "DUP–

"DUP+

[

," "DUP–

" or "DUP+

" or

rPush [SET•SKIP] once to select the offset frequency set-

ting item.

tRotate [DIAL] to set the desired offset frequency within

0.000–1000.000 MHz range.

• The tuning step, selected in VFO mode, is used for setting.

• Push [MHz• TS] then rotate [DIAL] to change the frequency in

10 MHz steps, or push again then rotate [DIAL] to change the

frequency in 1 MHz steps. (Each push toggles 1 MHz, 10 MHz

or selected tuning steps.)

yPush any switch for main band to exit set mode.

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