Icom IC-T81A Instruction Manual page 7

[SP]
Remote
MIC
[MIC]
3.2 V
PTT
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 [CALLÇ]
➥ Push to select the call channel. (p. 19)
➥ While pushing [PTT], this key sends a DTMF "C." (p. 21)
This connection
Audio out
(8 Ω)
does not apply
when a conden-
sor microphone
33 kΩ
Audio input
(2 kΩ) is connected.
PTT
PANEL DESCRIPTION
!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.
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