Icom IC-80AD Instruction Manual - Page 37

Repeater And Duplex Operations

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5 REPEATER AND DUPLEX OPERATIONS N Repeater operation When using a repeater, the transmit frequency is shifted from the receive frequency by the offset frequency (p. 119). This is called duplex operation. It is convenient to program repeater information into memory channels (p. 94). 144.700 MHz Repeater 144.700 MHz 145.300 MHz 145.300 MHz Uplink (transmitting freq.) Downlink (receiving freq.) Station A Station B q Set the receive frequency (repeater output frequency). w Set the shift direction of the transmit frequency. (DUP- or DUP; see p. 31 for details.) • When the auto repeater function is in use (U.S.A. and Korean versions only), this selection and step e are not necessary. (p. 32) "DUP-"or "DUP" appears 1 ePush and hold [TONE](7) for 2 1 sec. to activate the subaudible 3 tone encoder, according to repeater requirements. • "T" appears. T 4 5 Refer to p. 119 for tone frequency 6 settings. r Push and hold [PTT] to transmit. 7 • The displayed frequency automatically changes to the transmit fre- 8 quency (repeater input frequency). 9 • If "OFF" appears, check the off- set frequency or shift direction. 10 (p. 31) While receiving While transmitting 11 12 13 14 t Release [PTT] to receive. 15 y Push and hold [SQL] to check whether the other station's 16 transmit signal can be directly received or not. 17 U.S.A. and Korean versions: Auto repeater function uses standard values of the re- 18 peater tone frequency and offset frequency. 19 29

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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 offset frequency
(p. 119)
.
This is
called duplex operation. It is convenient to program repeater
information into memory channels
(p. 94)
.
Station A
Station B
Repeater
145.300 MHz
144.700 MHz
144.700 MHz
145.300 MHz
Uplink
Downlink
(transmitting freq.)
(receiving freq.)
q
Set the receive frequency
(repeater output frequency)
.
w
Set the shift direction of the transmit frequency.
(DUP– or
DUP; see p. 31 for details.)
•
When the auto repeater function is in use (U.S.A. and Korean
versions only), this selection and step
e
are not necessary.
(p. 32)
“DUP–”or “DUP” appears
T
e
Push and hold
[TONE]
(7) for
1 sec. to activate the subaudible
tone encoder, according to re-
peater requirements.
• “T” appears.
Refer to p. 119 for tone frequency
settings.
r
Push and hold
[PTT]
to transmit.
•
The displayed frequency automati-
cally changes to the transmit fre-
quency (repeater input frequency).
•
If “OFF” appears, check the off-
set frequency or shift direction.
(p. 31)
While receiving
While transmitting
t
Release
[PTT]
to receive.
y
Push and hold
[SQL]
to check whether the other station’s
transmit signal can be directly received or not.
U.S.A. and Korean versions:
Auto repeater function uses standard values of the re-
peater tone frequency and offset frequency.