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

5SCAN OPERATION
17
Weather channel scan 
(U.S.A. version only)
qPush  , then push [ENT (WX)] to select a weather
channel.
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].
“TAG” channels
Memory and weather* channels can be specified to be
skipped for the memory and weather* channel scans respec-...

18
6VOR NAVIGATION (IC-A23 ONLY)
VOR indicators
214
34
FROM
COM BAND
(118.00–136.975 MHz)NAV BAND (108.00–117.975 MHz)
DVOR MODE
Function display of the IC-A23 General VOR equipmentTo-from flag 
indicator
CDI MODE Course indicator
Course
indicatorCourse deviation needles
Overflow indicatorPush [F] then [r CDI]. Push [F] then [q DVOR].
To-from flag indicator
Course indicator
Course deviation 
needle To-from flag indicator
Two-degree deviation 
marks
VOR NAVIGATION 

19
6VOR NAVIGATION
VOR functions
◊To select CDI mode
To show the deviation between your flying course and the de-
sired course, push  , then [4 (CDI)].
◊To select DVOR mode
When entering the NAV band, 108.000–117.975 MHz, the
IC-A23 selects DVOR mode automatically.
To show your aircraft’s direction to (or from) the VOR station,
push  , then [1 (DVOR)].
◊‘TO’or ‘FROM’flag selection
The to-from flag indicators indicate whether the VOR naviga-
tion information is based on a course leading to the VOR sta-
tion...

20
6VOR NAVIGATION
Flying to a VOR station
The IC-A23 shows the deviation from a VOR station.
qSelect a VOR station on your aeronautical chart and set
the frequency of the station.
•The course indicator indicates where you are located on a radial
from the VOR station.
•The course indicator shows ‘- -’when either aircraft is too far
away from the VOR station or the frequency is not set correctly at
the VOR station.
wSelect the ‘TO’flag when flying to the VOR station, or se-
lect the ‘FROM’flag when flying...

21
6VOR NAVIGATION
VOR
station
0°
10°
20°
30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
150° 160° 170° 180° 190° 200° 210° 220° 230° 240° 250° 260° 270° 280° 290° 300°310°320°330°
340°
350°N
Magnetic
north
Desired course
Aircraft heading 40
°
  123.65
VORTAC
SEATTLE
116.8 Ch 115 SEATHE AIRCRAFT IS ON COURSE
VOR
station
0°
10°
20°
30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
150° 160° 170° 180° 190° 200° 210° 220° 230° 240° 250° 260° 270° 280° 290° 300°310°320°330°
340°
350°N
Magnetic...

22
6VOR NAVIGATION
Entering a desired course
The IC-A23 shows not only the deviation from the VOR sta-
tion but the deviation from the desired course.
qSet the frequency for the desired VOR station.
•To change the to-from flag, push ,then [2 (TO)] or [3
(FROM)].
wPush  , then [4 (CDI)] to select CDI mode.
eSet the desired course to the VOR station using the tuning
dial or keypad.
•‘Ω’or ‘≈’appears on the function display when your aircraft is off
the desired course.
•When your heading is correct, the...

23
6VOR NAVIGATION
EXAMPLE:Entering the desired course bearing 89°to a VOR station.
VOR
station
0°
10°
20°
30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
150° 160° 170° 180° 190° 200° 210° 220° 230° 240° 250° 260° 270° 280° 290° 300°310°320°330°
340°
350°
N
Magnetic
north
VOR
station
0°
10°
20°
30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
150° 160° 170° 180° 190° 200° 210° 220° 230° 240° 250° 260° 270° 280° 290° 300°310°320°330°
340°
350°113.4 Ch 81 OLMVORTAC
OLYMPIA116.8 Ch 115 SEA123.65...

24
6VOR NAVIGATION
Duplex operation 
(U.S.A. version only)
The duplex function allows you to call a flight service station
while receiving a VOR station. The duplex function requires
frequency programming for the flight service station in ad-
vance.
◊Programming a duplex frequency
qPush [CLR] to select frequency mode.
wSet a NAV band frequency using the tuning dial or keypad.
•NAV band frequency range: 108.00–117.975 MHz
ePush  , then [5 (DUP-W)].
•“DUP”flashes and transmit frequency appears.
rSet the...

25
7BATTERY PACKS
Charging
precautions
NEVER connect two or more chargers
at the same time.
Charging may not occur under temper-
atures of 10°C (+50°F) or over temper-
atures of 40°C (+104°F).
When using BC-119:If the charge
indicator flashes orange, vehicle bat-
tery voltage is low and charging is
not possible. Check the vehicle bat-
tery voltage in this case. If the charge
indicator flashes red, there may be a
problem with the battery pack (or
charger). Re-insert the battery pack
or contact your...

26
7BATTERY PACKS
DRapid charging with the BC-119DRegular charging
qAttach the battery pack to the transceiver.
wBe sure to turn the transceiver power OFF.
eConnect the Wall charger (BC-110A) or optional cable
(CP-12L or OPC-254L) as shown below.
•Charging period:15 hours 

IC-A23/A5 with
attached
battery case
Wall charger
CP-12L
(optional)
OPC-254L
(optional)
To a 12 to 
14 V DC
power source To
[CHARGE]white
black
*AD-87B
(supplied with AD-87A)
AD-88
(optional) Check orientation
for correct charging...