Repeater And Duplex Operations; Repeater Operation - Icom IC-T70A Instruction Manual

REPEATER AND DUPLEX OPERATIONS

■ Repeater operation

When using a repeater, the transmit frequency is shifted from
the receive frequency by the frequency offset
called duplex operation. It is convenient to program repeater
information into memory channels
Repeater
144.700 MHz
145.300 MHz
Station A
q Set the receive frequency
w Set the shift direction of the transmit frequency.
DUP; see p. 26 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. 27)
"DUP–"or "DUP" appears
. This is
(p. 54)
.
(p. 29)
Uplink
144.700 MHz
(transmit frequency)
Downlink
145.300 MHz
(receive frequency)
Station B
.
(repeater output frequency)
(DUP– or
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.
• The displayed frequency automati-
cally changes to the transmit fre-
quency (repeater input frequency).
• If "OFF" appears, check the frequency
offset or shift direction. (p. 26)
While receiving
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.
5
Appears
[PTT]
While transmitting
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
24