Icom Ic-A23, Ic-a5 Vhf Air Band Transceiver Instruction Manual

7
2PANEL DESCRIPTION
!0MEMORY BANK NUMBER INDICATOR(p. 12)
Shows the selected memory bank number.
!1FREQUENCY DISPLAY (p. 8)
➥Shows the operating frequency.
➥Shows the channel name when the memory name func-
tion is selected.
!2COURSE INDICATORS (IC-A23 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.!3TO-FROM INDICATOR (IC-A23 only) (p. 19)
➥Indicates whether the VOR navigation information...

8
3BASIC OPERATION
DIAL↔[Y]/[Z] trade function
The transceiver is equipped [DIAL]↔[Y]/[Z] keys trade func-
tion. Push  then push [CLR (DIAL/YZ)] to trade each
function.
Default setting:
DIAL:•Setting the frequency, •Selecting the memory chan-
nel, •Selecting the bank number
YZkeys:•Increasing or decreasing the audio level
Following explanation is according to the default setting.
Setting a frequency
ïUsing keypad
qPush [PWR] for 0.5 sec. to turn power ON, then push
[CLR] to select the frequency 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 ap-
pears.
wRotate the [DIAL] to select the desired WX channel.
ePush [CLR] to exit the WX channel mode and return to fre-
quency mode.
Setting squelch level
The transceiver has a noise squelch circuit to mute undesired
noise while receiving no signal....

10
3BASIC OPERATION
Lock function
The lock function prevents accidental frequency changes and
accidental function activation.
qPush  , then push [KEY LOCK] to turn the function ON.
wTo turn the function OFF,repeat step qabove.
•“ ”disappears.
Display backlighting
Push [LIGHT] to turn the display backlighting ON or OFF.
Low battery indicator
Low battery indicator appears when the battery power has
decreased to a specified level. The attached battery pack re-
quires recharging.
REC/PLAY the signals...

11
3BASIC OPERATION
Receiving
qPush [PWR] to turn the power ON.
wPush [SQL], then turn the [DIAL] counterclockwise (or [Z]
key) to select the squelch level [0].
ePush [Y]/[Z] key several times to adjust the audio level.
rPush [SQL], then turn the [DIAL] clockwise (or [Y]key)
until the noise is muted.
•The Tx/Rx indicator disappears.
tSet the desired frequency using the [DIAL] or keypad.
yPush [ANL] to reduce pulse noise such as that caused by
engine ignition systems, if necessary.
•[ANL] appears on the...

12
4MEMORY OPERATION
Memory channel selection
The transceiver has 200 memory channels for storage of
often-used frequencies along with 6-character notes.
qPush [MR] to select memory mode.
•Memory BANK number and memory CH number appears.Using the [DIAL]:
wPush [BANK], then rotate the [DIAL] to select the desired
memory bank number, then push [BANK] (or [CLR]) to exit
the bank selection mode.
• “BANK”appears.
eRotate [DIAL] to select the desired memory CH number.
•If no memory channel is programmed in...

13
4MEMORY OPERATION
Programming a memory
channel
The transceiver has 200 (10 BANK x 20 CH) memory chan-
nels for storage of often-used frequencies.
qPush [CLR] to select Frequency mode, if necessary.
wSelect the desired frequency.
• Push 
, then push [ENT (WX)] to select a weather channel.*
•Set the desired frequency or WX channel* using the [DIAL] or
keypad.
ePush 
, then push [MR (MW)].
•Memory BANK and memory channel number appears.
rRotate the [DIAL] to select the desired memory channel
number....

14
4MEMORY OPERATION
Memory names
ïProgramming memory names
The memory channel can display a 6-character comment as
well as a frequency.
qRotate the [DIAL] to select the desired frequency in Fre-
quency mode.
wPush 
,then push [MR].
eRotate the [DIAL] to select the desired memory channel to
be programmed.
•Push [BANK] to select the BANK number if desired. Push [CLR]
to exit the BANK selection mode.
rPush [MR] to enter the memory name programming mode.
•“-- -- -- -- -- -- ”appears on the display.
tPush...

15
4MEMORY OPERATION
[CLR], [1], [2], [5], [ENT] [F], [MR(MW)]
[1], [5]
(*see NOTE)
[MR] [2], [2], [4], [4], [4], [4] [7], [7], [7]
[0], [0], [0],[2],[3] [ENT]
• EXAMPLE:Programming 125.000 MHz into memory BANK 0/ memory channel 15
with “AIR-23”as a comment.
*NOTE:Push [BANK], then rotate the [DIAL] to select the
BANK number, if desired. Push [CLR] to continue memory
name programming. 

SCAN OPERATION5
16
Scan types
The U.S.A. version has 3 scan types to suit your needs. The
non-U.S.A. versions have 2 scan types.
COM band scan
qPush [CLR] to select VFO mode.
wSet squelch to the point where noise is just muted.
ePush   , then push [SQL (SCAN)] to start the scan.
• When a signal is received, the scan pauses until it disap-
pears.
•To change the scanning direction, rotate the [DIAL].
rTo stop the scan, push [CLR].
Memory scan
qPush [MR] to select memory mode.
wSet squelch to the point...