Icom Ic-A234, Ic-A6 Vhf Air Band Transceiver Instruction Manual

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1
PANEL DESCRIPTION
1
iTAG CHANNEL INDICATOR(p. 17)
“” appears when the memory channel is set as a TAG
channel.
oMEMORY CHANNEL INDICATOR (pgs. 12–15)
Shows the memory channel number.
!0MEMORY BANK NUMBER INDICATOR(p. 12)
Shows the selected memory bank number.
!1OVERFLOW INDICATOR (IC-A24 only) (pgs. 18–22)
Appears when the deviation between the desired course
and flying course is over 10 degrees.
!2ANL INDICATOR(p. 9)
Appears while the ANL (Automatic Noise Limiter) function
is in use.
!3COURSE DEVIATION NEEDLES (IC-A24 only)
(pgs. 18–22)
Indicates the deviation between the desired course and
your actual flying course every 2 degrees.!4COURSE INDICATORS (IC-A24 only) (p. 19)
➥Indicates where your aircraft is located on a VOR radial
in DVOR mode.
➥Indicates where your desired course is located on a
VOR radial in CDI mode.
!5TO-FROM INDICATOR (IC-A24 only) (p. 19)
Indicates whether the VOR navigation information is
based on a course leading to the VOR station or leading
away from the VOR station. 
						

							7
DAntenna
CAUTION:
DO NOT
transmit without an antenna. Other-
wise the transceiver may be damaged.
Insert the supplied antenna into the antenna connector and
screw down the antenna as shown below.
DBelt clipConveniently attaches to your belt.
Attach the belt clip with the supplied screws as below.
NOTE:Use the supplied screws only.DBattery pack replacementBefore replacing the battery pack, push [PWR] for 2 sec. to
turn the power OFF.
Slide the battery release button forward, then pull the battery
pack upward with the transceiver facing away from you.
Supplied screws
2
ACCESSORY ATTACHMENT 
						

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3
BASIC OPERATION
Setting a frequencyïUsing keypadqPush [PWR] for 2 sec. to turn power ON, then push
[CLR•
DEL
] to select the frequency mode when memory CH
number or WX CH number appears on the function dis-
play.
wPush 5 appropriate digit keys to input the frequency.
•Push [1]* as the 1st digit.
• When a wrong digit is input, push [CLR•
DEL
] to clear,
then repeat step wagain.
•Push [ENT•
WX
] to enter consecutive zero digits.
•Only [2]*, [5]*, [7•] and [0•
BANK
] can be entered as the
5th and final digit.
[EXAMPLE]
• 111.225 MHz: Push
• 117.250 MHz: Push
• 120.000 MHz: Push
• 125.300 MHz: Push
ïUsing the tuning dialqPush [PWR] for 2 sec. to turn power ON, then push
[CLR•
DEL
] to select the frequency mode when memory CH
number or WX CH number appears on the function dis-
play.
wRotate [DIAL] to set the desired frequency.
• To select the 1 MHz tuning step, push 
, then rotate
[DIAL]. Push  again to return the normal tuning.
Setting a squelch levelThe transceiver has a noise squelch circuit to mute undesired
noise while receiving no signal.
qPush [SQL•
WX-ALERT
], then rotate [DIAL] to select the
squelch level.
• ‘SQL--0’is loose squelch and ‘SQL--24’is tight squelch.
•Appears “” while the squelch is open.
wPush [SQL•
WX-ALERT
] or [CLR•
DEL
] to exit the squelch
set mode.
Selecting a weather channel 
(U.S.A. version only)
The U.S.A. version has VHF marine WX (weather) channel
receiving capability for flight
planning.
qPush 
,then push
[ENT•
WX
] to select WX
channel mode.
•“WX--” and previously se-
lected channel number appears.
wRotate [DIAL] to select the desired WX channel.
ePush [CLR•
DEL
] to exit the WX channel mode and return
to frequency mode.
23 
						

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3
BASIC OPERATION
ReceivingqPush [PWR] to turn the power ON.
wPush [SQL•
WX-ALERT
], then rotate [DIAL] counterclock-
wise to select the squelch level 0.
eRotate [VOL] to adjust the audio level.
rPush [SQL•
WX-ALERT
], then rotate [DIAL] clockwise until
the noise is muted.
•“ ” indicator disappears.
tSet the desired frequency using [DIAL] or keypad.
yWhen a signal is received on the set frequency:
•“ ” indicator appears.
• Squelch opens and audio is emitted from the speaker.
When [SQL] control is too “tight,” squelch may not open for
weak signals. To receive weaker signals, loosen the squelch 
TransmittingqSet the desired frequency in COM band using [DIAL] or
keypad.
•COM band frequency range: 118.00–136.975 MHz
wPush and hold [PTT] to transmit.
•“ ” indicator appears.
eSpeak into the microphone at a normal voice level.
•DO NOThold the transceiver too close to your mouth or speak
too loudly. This may distort the signal.
rRelease [PTT] to return to receive.ANL functionThe ANL (Automatic Noise Limiter) function reduces noise
components such as that caused by engine ignition systems
while receiving.
• Push [ANL•
SCAN
] to turn the ANL function ON/OFF.
“” appears on the display while the ANL function is ON.CAUTION:Transmitting without an antenna may damage
the transceiver.NOTE: To prevent interference, listen on the frequency be-
fore transmitting. If the frequency is busy, wait until the
channel is clear. 
						

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3
BASIC OPERATION
Low battery indicatorLow battery indicator appears
when the battery power has de-
creased to a specified level. The
attached battery pack requires
recharging.Recall functionThe recall function stores the last 10 frequencies used.
The function stores frequencies when the frequency is pro-
grammed and transmitted on (except memory, weather and
emergency channels).DCalling the stored frequencies➥Push  to call the 1st stored frequency.
➥Push  to call the 10th stored frequency.
DDeletes the stored recall channelqPush  or  to select the deleting recall channel.
wPush  , then push [CLR•
DEL
] for 2 sec. to delete it.
• (e.g.)  Deletes “r0” recall channel which is stored 120.450 MHz,
and “r1” recall channel stores 123.450 MHz.
DReplaces the stored recall channelqPush  or  to select the replacing recall channel.
wPush  , then push  or  to replace it.
• Replaces the selected channel into the previous channel when
push , then .
• Replaces the selected channel into the behind channel when
push , then .
• (e.g.) Replaces “r0” which is stored 121.375 MHz into “r1”.NOTE:Deletes in order of old 
recall
channel automatically
when stored frequencies exceeds 10 channels.
Low battery indicator
Appears recall number.
: Push 
: Push 
• Recall number rotation
3 
						

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3
BASIC OPERATION

Setting weather alert function
An NOAA broadcast station transmits a weather alert tone be-
fore any important weather announcements. When the
weather alert function is turned ON, the transceiver detects
the alert, and sounds a beep tone until the transceiver is op-
erated. The previously selected (used) weather channel is
checked any time during standby, or while scanning.
•Push  , then push [SQL•
WX-ALERT
] to turns the weather
alert function ON (Indicates “”)/OFF (Indicates
“”).
Accessing 121.5 MHz
emergency frequencyThe IC-A24 and IC-A6 can quickly gain access to the
121.5 MHz emergency frequency. This function can be acti-
vated even when the key lock function is in use.
qPush [121.5] for 2 sec. to call the emergency frequency.
wPush [CLR•
DEL
] to exit from the emergency frequency.
Lock functionThe lock function prevents accidental frequency changes and
accidental function activation.
qPush  , then push [7•] to turn the lock function ON.
•“ ” appears.
wTo turn the function OFF, repeat step qabove.
•“ ” disappears.
Side tone functionWhen using an optional headset, the transceiver outputs your
transmitted voice to the headset for monitoring. Connect the
optional headset with the transceiver when using this function
(OPC-499 
HEADSET ADAPTER and headset are required
).
(p. 34)
DSetting the side tone levelqPush [PTT] to turn the transmit mode ON.
wDuring transmit mode, rotate [DIAL] to adjust the monitor-
ing level.
• ‘ST--0’is OFF and ‘ST--10’is Max. level. NEVERoperate the transceiver with a headset at high vol-
ume levels for long period. A ringing in your ears may
occur. If so, reduce the monitor level or discontinue use.
Setting beep toneThe beep tone which sounds at the push of a switch can be
set, if desired.
qPush 
, then push [8•
BEEP
] to enter the beep tone
setting mode.
wRotate [DIAL] to set the beep level.
• ‘BEP-- 0’is OFF and ‘BEP-- 9’is Max. level. 
ePush [CLR•
DEL
] to exit the beep tone set mode.
BacklightingPush [LIGHT] to turn the display and keypad backlighting ON
or OFF. 
						

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MEMORY OPERATION
Memory channel selectionThe transceiver has 200 memory channels for storage of
often-used frequencies along with 6-character notes.
qPush [MR•
MW
] to select memory mode.
•Memory BANK number and memory CH. number appears.
Using [DIAL]:
wPush [0•
BANK
], then rotate [DIAL] to select the desired
memory BANK number, then push [0•
BANK
] (or
[CLR•
DEL
]) to exit the BANK selection mode.
• “BANK” appears.
eRotate [DIAL] to select the desired memory CH. number.
•If no memory CH. is programmed in the selected BANK, no
memory CH. selection is available.
Using the Keypad:
wPush [0•
BANK
], then push appropriate digit key ([0•
BANK
]
to [9•
TA G
]) to select the desired memory BANK number,
then push [0•
BANK
] (or [CLR•
DEL
]) to exit the BANK-se-
lection mode.
• “BANK” appears.
ePush 2 appropriate digit key (00 to 19) to select the de-
sired memory CH. number.
•If no memory CH. is programmed in the selected BANK, no
memory CH. selection is available.NOTE:Comments appear first when programmed, how-
ever, the transceiver can be programmed by your dealer to
show the operating frequency first. Push [MR•
MW
] to dis-
play the comment in this case.
Transferring memory
contentsThis function transfers a memory channel’s contents into the
frequency mode. This is useful when searching for signals
around a memory channel’s frequency.
qPush [MR•
MW
] to select memory mode.
wSelect the desired memory channel to be transferred using
[DIAL] or keypad.
ePush  , then push [MR•
MW
] to transfer the memory
channel’s contents into the frequency mode.
•BANK number and memory CH. number disappears as
frequency mode is automatically selected and the mem-
ory contents are transferred.
Memory mode Frequency mode
34 
						

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4
MEMORY OPERATION
Programming a memory
channelThe transceiver has 200 (20 CH. ×10 BANK) memory chan-
nels for storage of often-used frequencies.
qPush [CLR•
DEL
] to select the frequency mode, if neces-
sary.
wSelect the desired frequency.
• Push 
, then push [ENT•
WX
] to select a weather channel.*
•Set the desired frequency or weather channel* using [DIAL] or
keypad.
ePush 
, then push [MR•
MW
] to program the contents
into the selected memory channel.
•Memory BANK and memory channel number appears.
rRotate [DIAL] to select the desired memory channel num-
ber.
•Push  , then push [0•
BANK
] to select the BANK number if de-
sired. 
• Push  [CLR•
DEL
], [ENT•
WX
] or  , then push [0•
BANK
] to exit
the BANK selection mode.
•“M,” BANK and memory numbers are blinks.
tPush [ENT•
WX
] to program the information into the chan-
nel and return to the frequency mode.
*Weather channel: U.S.A. version only.
(or rotate [DIAL])
(or rotate [DIAL])
Push
Push
Push PushPush
or
or Push
PushPush
or
•EXAMPLE:Programming WX-05* into memory BANK 3/
memory channel 9. 
						

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4
MEMORY OPERATION
Memory namesïProgramming memory namesThe memory channel can display a 6-character names in-
stead of the programmed frequency.
qRotate [DIAL] to select the desired frequency in the fre-
quency mode. 
wPush 
,then push [MR•
MW
] to program the contents
into the selected memory channel.
eRotate [DIAL] to select the desired memory channel to be
programmed.
•Push [0•
BANK
] to select the BANK number if desired. Push
[CLR•
DEL
] to exit the BANK selection mode.
rPush [MR•
MW
] to enter the memory name programming
mode.
•“-- -- -- -- -- -- ” appears on the display.
tPush the appropriate digit key several times to select the
desired character as listed at right.
•To erase a character, overwrite with a space (displayed as _).
•To move the cursor forwards or backwards, use [DIAL].
yPush [ENT•
WX
] to program the name.
•Flashing the memory name stops.
•When no name is programmed, the display shows the operating
frequency.
•To clear the programmed memory names, push [CLR•
DEL
] be-
fore pushing [ENT•
WX
].

Clearing the memory contents
Unwanted memory channels can be cleared. Programming
over a memory channel also clears the previously pro-
grammed contents. Memory channel 1 cannot be cleared.
qSelect the memory channel to be cleared.
wPush
, then push and hold [CLR•
DEL
] for 1 sec.
•“-- -- -- -- -- --” appears momentarily, then the next selec-
table channel appears.
Key Character Key Character Key Character
1 1, Q, Z 2 2, A, B, C 3 3, D, E, F
4 4, G, H, I 5 5, J, K, L 6 6, M, N, O
7 7, P, R, S 8 8, T, U, V 9 9, W, X, Y
ENT Program 0 0, space, -
4 
						

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MEMORY OPERATION
Push
Push
PushPush Push
Push
PushPush PushPush•EXAMPLE:Programming 125.000 MHz into memory BANK 1/ memory channel 17 with “AIR-23” as a comment.
NOTE:Push [0•
BANK
], then rotate [DIAL] to select the
BANK number, if desired. Push [CLR•
DEL
] to continue
memory name programming.