![background image](http://html1.mh-extra.com/html/icom/ic-u80/ic-u80_instruction-manual_2038107043.webp)
37
9
9
DTMF MEMORY
The transceiver has three methods of transmitting a DTMF
code sequence. Select a desired option 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 DTMF TX key item (dmt).
e
Rotate
[VOL] to select a desired option.
• dmt.k : Transmits the appropriate DTMF code assigned to a
pushed key.
• dmt.m :
Transmits the programmed DTMF code sequence in the
DTMF memory channel assigned to a pushed key.
• dmt.t : No DTMF code can be transmitted. However, while
holding down
[PTT], pushing either the [
p
] or [
q
]
transmits a 1750 Hz tone burst signal.
r
Push
[# ENT] to exit the Set mode.
D
Manual DTMF code transmission
First, set the DTMF TX key to “dmt.k” in the Set mode.
➥
While holding down
[PTT], push the desired keys to trans-
mit a DTMF code sequence manually.
• Push
[0]–[9] for “0”–“9,” [MONI] for “A,” [
p
] for “B,” [
q
] for “C,”
[VFO/MR/CALL] for “D,” [
M
] for “
M
,” and
[# ENT] for “#.”
D
Using a DTMF memory channel
First, set the DTMF TX key to “dmt.m” in the Set mode.
➥
While holding down
[PTT], push one of the keys to trans-
mit the programmed DTMF code sequence in the DTMF
memory.
• Pushing
[0] to [9], [MONI](A), [
p
](B), [
q
](C), [VFO/MR/CALL]
(D),
[
M
](E), or [# ENT](F) transmits a DTMF code channel
(d0–d9, dA, dB, dC, dD, dE or dF) respectively.
D
1750 Hz tone
To access some European repeaters, the transceiver must
transmit a 1750 Hz tone burst signal.
• This tone can be used as a ‘Call signal’ in countries out of Europe.
First, set the DTMF TX key to “dmt.t” in the Set mode.
➥
While holding down
[PTT], hold down either the [
p
] or
[
q
] for 1 or 2 seconds to transmit a 1750 Hz tone burst
signal.
• The tone is transmitted until you release the key.
■
Transmitting a DTMF code sequence
1
2
3
4
5
6
7
8
10
11
12
13
14
15
16
17
18
19