Duplex Operation - Icom ic-U80 Instruction Manual

5
REPEATER OPERATION

■ Duplex operation

D Setting the frequency offset
q Push [FUNC](M), and then [SET](8) to enter the Set mode.
w Push [p] or [q] to select the offset item.
• "±" blinks, and the current frequency offset appears.
e Rotate [VOL] to select the frequency offset.
• The offset is selected in the
same step as the frequency
tuning step.
• The unit of the frequency offset
is "MHz."
r Push [# ENT] to exit the Set mode.
D Setting the duplex direction
Push [FUNC](M), and then [DUP](4) to select "–" (negative
offset) or "+" (positive offset).
• "–" or "+" indicates the transmit frequency is shifted up (+) or down
(–) from the receive frequency.
• A blinking "–" or "+" indicates the Reverse Duplex function is ON, as
described to the right.
• Example— When the frequency offset is 5.0 MHz
Duplex While receiving
+ (up)
– (down)
22
5.0 MHz offset
While transmitting
D Reverse Duplex function
When the Reverse Duplex function is ON, the receive and
transmit frequencies are reversed. The function can be
turned ON in the Set mode.
q Push [FUNC](M), and then [SET](8) to enter the Set mode.
w Push [p] or [q] to select the Reverse Duplex function
item (REV).
e Rotate [VOL] to turn the function ON or OFF.
r Push [# ENT] to exit the Set mode.
The receive and transmit frequencies are shown in the table
below, with the following configurations:
Input freq. : 435.300 MHz
Reversed
Direction : – (down)
Offset : 5.0 MHz
• "–" or "+" blinks when the Re-
verse Duplex function is ON.
RX freq. TX freq.
OFF 435.300 MHz 430.300 MHz
ON
430.300 MHz 435.300 MHz