Duplex Operation - Icom IC-R2 Instruction Manual

9

DUPLEX OPERATION

Duplex communication uses 2 different frequencies for trans-
mitting and receiving. Generally, duplex is used in communi-
cation 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. 12)
This function is not available in the broadcast band (0.495
– 1.620 MHz) except for U.S.A. and Canada versions.
q Set the receive station frequency (repeater output fre-
quency).
w Set the shift direction and offset of the transmit station fre-
quency as described below.
e Push and hold [SQL] to monitor the transmit station fre-
quency (repeater input frequency) directly.
D Duplex shift direction
q Push [V/M] for 2 sec. to enter expanded set mode.
w Rotate [DIAL] until "DUP" appears.
• Turn the expanded set mode ON for
selection. (p. 25)
• "DUP" disappears after 1 sec. and
"dP" appears.
e While pushing [FUNC], rotate
[DIAL] to select "– DUP" or "+DUP."
24
• "–DUP" or "+DUP" indicates the transmit station frequency for
minus shift or plus shift, respectively.
r Push [V/M] to exit set mode.
D Offset frequency
During duplex operation, the transmit station frequency is
shifted from the receive station frequency by an amount de-
termined by the offset frequency.
q Select VFO mode or desired memory channel to be pro-
grammed.
w Push [V/M] for 2 sec. to enter expanded set mode.
e Rotate [DIAL] until "OFFSET" appears.
• Turn the expanded set mode ON for selection. (p. 25)
• "OFFSET" disappears after 1 sec. and "OW" appears.
r While pushing [FUNC], rotate [DIAL] to set the desired off-
set.
• The offset frequency changes according to the selected tuning
step.
t Push [V/M] to exit set mode.
Offset frequency set mode
Minus shift
0.6 MHz (600 kHz) offset