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5
REPEATER AND DUPLEX OPERATIONS
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■ Repeater operation
When using a repeater, the transmit frequency is shifted from
the receive frequency by the frequency offset
(p. 54). This is
called duplex operation. It is convenient to program repeater
information into memory channels
(p. 29).
Station A Station B
Repeater
145.300 MHz
144.700 MHz 144.700 MHz
145.300 MHz
Uplink
Downlink
(transmit frequency)
(receive frequency)
q Set the receive frequency (repeater output frequency).
w Set the shift direction of the transmit frequency.
(DUP– or
DUP; see p. 26 for details.)
•Whentheautorepeaterfunctionisinuse(U.S.A.andKorean
versions only), this selection and step e are not necessary.
(p. 27)
e Push and hold [TONE](0) for 1 sec.
to activate the subaudible tone en-
coder, according to the repeater re-
quirements.
•“T”appears.
Refer to p. 53 for tone frequency set-
tings.
r Push and hold [PTT] to transmit.
•Thedisplayedfrequencyautomati-
cally changes to the transmit fre-
quency (repeater input frequency).
•If“OFF”appears,checkthefrequency
offset or shift direction. (p. 26)
While receiving While transmitting
t Release [PTT] to receive.
y Push and hold [MONI](BAND) to check whether the other
station’s transmit signal can be directly received or not.
U.S.A. and Korean versions:
The auto repeater function uses standard values of the
repeater tone frequency and frequency offset.
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