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3
2
PANEL DESCRIPTION
☞
NOTE:
When connecting or disconnecting an external
speaker-microphone, first turn off power to the transceiver.
i
TUNING CONTROL [DIAL]
Changes the operating frequency; memory channel in
memory mode; set mode contents in set mode, etc.
o
VFO/CLEAR KEY [VFO(CLR/MHz)
Å
]
➥
Push to select VFO mode. (p. 9)
➥
Cancels some functions such as digit input before entry,
scans, etc.
➥
Push and hold for 1 sec., then rotate [DIAL] to change
the MHz digit. (p. 10)
➥
While pushing [PTT], this key sends a DTMF “A.” (p. 21)
!0
MEMORY MODE KEY [MR(MW)
ı
]
➥
Push to select memory mode. (p. 11)
• “
X
” appears while in memory mode.
➥
Push for 1 sec. to enter memory write mode. (p. 18)
➥
While pushing [PTT], this key sends a DTMF “B.” (p. 21)
!1
CALL KEY [CALL
Ç
]
➥
Push to select the call channel. (p. 19)
➥
While pushing [PTT], this key sends a DTMF “C.” (p. 21)
This connection
does not apply
when a conden-
sor microphone
is connected.
Remote
Audio out
(8
Ω
)
[SP]
MIC
3.2 V
PTT
[MIC]
Audio input
PTT
33 k
Ω
(2 k
Ω
)
!2
OUTPUT POWER KEY [H/L(LOCK)
Î
]
➥
Push to toggle between low and high power. (p. 11)
• “LOW” appears while low power is selected.
➥
Push for 1 sec. to toggle the lock function on/off. (p. 11)
• “L” appears while the lock function is activated.
➥
While pushing [PTT], this key sends a DTMF “D.” (p. 21)
!3
RIT KEY [RIT(TSCAN)#]
(p. 13)
➥
Push, then rotate [DIAL] to change the RIT/VXO setting.
• This function is only available for the 1.2 GHz band and RIT
or VXO must be activated in set mode (p. 13).
➥
Push for 1 sec. to turn the tone scan function on/off. (p.
26)
➥
While pushing [PTT], this key sends a DTMF “F.” (p. 21)
!4
DIGIT KEYS
➥
Input the specified digit during frequency input, memory
channel selection, etc.
➥
Transmit the DTMF code of the specified digit while
pushing [PTT]. (p. 21)
!5
MHz KEY [• (
M
)]
➥
Used as a shortcut for inputting frequencies. (p. 10)
➥
Transmits an “E” for DTMF operation while pushing
[PTT]. (p. 21)
!6
EXTERNAL DC POWER JACK [DC13.5V]
Allows you to operate the transceiver with a 4.5 to 16 V DC
power source using optional cables, CP-12L or OPC-254L.
u
CAUTION:
DO NOT
connect when a battery case is at-
tached.
IC-T81A/E Manual-(1) 01.12.5 6:55 PM Page 3 (1,1)