INSTALLATION GUIDE
VHF AIR BAND TRANSCEIVER
iA220
iA220E
Thank you for choosing the
IC-A220/IC-A220E
vhf
air
band
transceiver
with Icom’s state of the art
technology.
Carefully read this installation guide and the trans-
ceiver’s instruction manual before installing and op-
erating your transceiver.
Icom, Icom Inc. and Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the United Kingdom, Germany, France, Spain,
Russia, Australia, New Zealand, and/or other countries.
q
Mounting bracket ………………………………………… 1
w
D-Sub 25 pin connector ……………………………… 1
e
Connector pins (M39029/63-368) ……………………… 25
r
Screws Bind UNC (No. 4
×
3/8
)
………………………… 2
t
K-Lock Nut (No. 4
)
……………………………………… 2
y
BNC -LP ………………………………………………… 1
u
Washer (Icom washer V) ……………………………… 1
i
C-shaped ring …………………………………………… 1
o
Antenna cable clip ……………………………………… 1
!0
Self crimping nut (No. 6) ……………………………… 1
!1
Screw (No. 6
×
1/2) ……………………………………… 1
!2
Nut (No. 6) ……………………………………………… 1
!3
Crimp nuts (No. 6) ……………………………………… 6
!4
Speed nut UNC (No. 6) ………………………………… 4
!5
Screws (No. 6
×
1/2) …………………………………… 6
!6
COMM1 sticker ………………………………………… 1
!7
COMM2 sticker ………………………………………… 1
!8
Voltage sticker (For only IC-A220E) …………………… 1
z
SUPPLIED ACCESSORIES
q
w
e
r
t
y
u
i
o
!0
!1
!2
!3
!4
!5
!6
!7
!8
q
Check the quantity of parts.
Refer to
z
SUPPLIED ACCESSORIES
.
w
Prepare miscellaneous items required for installation.
Refer to miscellaneous items in
z
SUPPLIED ACCES-
SORIES
.
e
Prepare the required wiring.
Refer to
n
CONNECTOR INFORMATION
and
m
CON-
NECTING THE CABLES FOR D-SUB 25 PIN
.
• If you want to use the MBA-3 connector, refer to
b
US-
ING THE
MBA-3
and
,
CONNECTING THE CABLES FOR
CARD EDGE CONNECTOR
.
r
Assemble supplied mounting bracket and other parts.
Refer to
.
MOUNTING BRACKET ASSEMBLY
.
t
Cut the mounting hole.
Refer to
⁄0
MARKING A MOUNTING HOLE
.
y
Mount the transceiver into the mounting bracket.
Refer to
⁄1
MOUNTING TO THE BRACKET
.
u
Check the transceiver operation.
Refer to
⁄2
OPERATION CHECK
.
x
IMPORTANT
c
INSTALLATION PROCEDURES
NEVER
bend the cables sharply or place the cables too near
the aircraft control cables.
DO NOT
place the transceiver where hot or cold air blows di-
rectly on it.
AVOID
placing the transceiver in areas with temperatures be-
low –20˚C or above +55˚C (–4˚F to +131˚F).
NEVER
connect the transceiver to a power source using re-
verse polarity. Reverse polarity will damage the transceiver.
To prevent voltage drops, solder or crimp the cable lug when
connecting the DC power cable to the power supply.
Use a 50
Ω
, vertically polarized, VHF air band antenna.
VSWR should be less than 2.5:1.
Mount the antenna on a flat metal surface or install a ground
plane of at least 120 cm
2
(18 in
2
).
v
PRECAUTIONS
When installing the transceiver with card edge connector, use
the optional MBA-3 as described below.
D
Attachment
Unscrew the 10 bottom screws, then remove the bottom
q
cover from the transceiver.
Unscrew the four rear plate screws.
w
Disconnect the I/O cable connectors J3, J4, and coaxial
e
J6 , and then remove the rear plate from the transceiver.
Transceiver
Rear plate
J6
J4
J3
Connect the I/O cable connectors and coaxial onto the
r
MBA-3 as illustrated below.
Transceiver
MBA-3
Attach the MBA-3 to the transceiver with the five rear plate
t
screws.
Replace the removed bottom cover and 10 screws.
y
b
USING THE MBA-3
D
Power cable wiring
Use two pairs of #20 AWG wire for the power and power
grounding connections.
Rear view
5
13
14
25
1
15
4
Circuit breaker
(10 A)
+
13.8 V DC
or 27.5 V DC
Power ground
_
•
Circuit breaker
To prevent physical damage, a 10 A circuit breaker
MUST
be
installed in the DC power line in the aircraft. Install the circuit
breaker in the aircraft breaker panel or instrument panel to
ensure easy access during flight.
•
Power Ground
Connect the transceiver power ground to the aircraft ground.
D
Yoke-mounted memory and frequency exchange
switches
For the yoke-mounted memory and frequency exchange
switches, use a two-position spring loaded rocker switch or
two separate momentary push switches.
Rear view
D
Transmit/receive interlock connections
When two transceivers are installed, connect pin 2 to the
other transceiver
’s
PTT line, and connect pin 16 to the other
transceiver
’s
interlock line to prevent both transceivers from
simultaneously transmitting.
However, when two transceivers are installed through a dual
audio panel, the connections are not necessary.
D
Audio line connections
Use #20 ~ #24 AWG wires for connections.
Rear view
1
13
14
25
1
13
14
25
9 10 11
16 17
18
19
20
9 10
16
18
19
20
12
22
23
22 23
12
PTT switch
• One headset
•
Tw
o headsets with intercom
External
speaker
Intercom s
witch
Microphone
jack
1
Microphone
jack
2
Headphone jack 1
Headphone jack 2
PTT switch
Microphone
jack
External
speaker
Headphone jack
Audio
control
panel
Audio
control
panel
Auxiliary audio 1
Auxiliary audio 2
Auxiliary audio 3
Auxiliary audio 3
Auxiliary audio 2
Auxiliary audio 1
D
GPS receiver connection
Connect the GPS receiver’s input terminal to the pin 7, and
output terminal to pin 8.
Rear view
7
13
14
25
8
1
GPS
receiver
GPS receiver’s input
GPS receiver’s output
m
CONNECTING THE CABLES FOR D-SUB 25 PIN
D
D-sub 25-pin
D
Card edge connector (For optional MBA-3)
n
CONNECTOR INFORMATION
Pin
I/O
Description
Pin
I/O
Description
A
I
External Dimmer Control
1
Out RS-232C Serial data (TXD)
B
–
(reserved)
2
In
RS-232C Serial data (RXD)
C
In
Auxiliary audio 2
3
In
Auxiliary audio 3
D
In
Auxiliary audio 1
4
–
Auxiliary audio 1/2/3 (GND)
E
Out External speaker (4
Ω
/5 W)
5
–
External speaker (GND)
F
–
Aircraft ground
6
–
Aircraft ground
H
Out Headphones audio (500
Ω
/60 mW)
7
–
Headphones audio (GND)
J
In
Microphone 1 (600
Ω
)
8
–
Microphone (GND)
K
In
Microphone 2 (600
Ω
)
9
In
PTT*
L
In
Memory channel switch*
10
In
Intercom switch*
M
–
(reserved)
11
–
(reserved)
N
I
Transmit/receive interlock
12
In
Frequency exchange switch*
P
–
(reserved)
13
–
(reserved)
R
In
DC power
+
(13.8/27.5 V)
14
In
DC power
+
(13.8/27.5 V)
S
–
Aircraft ground
15
–
Aircraft ground
*Ground to activate.
Pin
I/O
Description
Pin
I/O
Description
1
In
Memory Channel Switch*
14
–
Aircraft ground
2
In
Transmit/receive Interlock
15
–
Aircraft ground
3
In
Frequency Exchange Switch*
16
In
PTT*
4
In
DC power
+
(13.8/27.5 V)
17
In
Intercom switch*
5
In
DC power
+
(13.8/27.5 V)
18
Out External speaker
(4
Ω/
5 W)
6
–
RS-232C Serial data (GND)
19
–
External speaker
(
GND)
7
Out RS-232C Serial data (TXD)
20
Out Headphones audio (500
Ω
/60 mW)
8
In
RS-232C Serial data (RXD)
21
In
External Dimmer control
9
–
Microphone
(
GND)
22
–
Headphones audio
(
GND)
10
In
Microphone 1 (600
Ω
)
23
In
Auxiliary audio 3
11
In
Microphone 2 (600
Ω
)
24
–
(reserved)
12
In
Auxiliary audio 1
25
–
(reserved)
13
In
Auxiliary audio 2
*Ground to activate.
A B C D E F H J K L M N P R S
1 2 3 4 5 6 7 8 9 101112131415
Rear view
Polarizing key (user supplied)
Rear view
1 2 3 4 5 6 7 8
16 17 18 19 20
14 15
9 10 11 12 13
21 22 23 24 25
The following accessories are supplied with the transceiver.
Carefully check the quantity of each part.
The following items are required for installation but are
NOT
supplied with the transceiver.
• VHF antenna for the air communication band
• Various cables
• An antenna cable with a BNC connectors (50
Ω
)
• Switches to be mounted on the aircraft yoke
• Headphones. (500
Ω
)
• Low-impedance carbon or dynamic microphone
• Preamplifier for a dynamic microphone
D
COMM1 and COMM2 stickers
When two transceivers are installed, attach the supplied COMM1
and COMM2 stickers to distinguish one from the another.
COMM
COMM1
or
COMM2
sticker
D
Voltage sticker
(For only IC-A220E)
When you install the transceiver in the optional MB-53,
attach the supplied voltage sticker on the MB-53.
READ THIS INSTALLATION
GUIDE
CAREFULLY
before
install
the
transceiver. This installation guide contains impor-
tant safety instructions.
NEVER
install the transceiver where normal navigation of
the aircraft may be hindered.
NEVER
install an antenna near any aircraft projection, en-
gine, or propeller.
Install a circuit breaker between the aircraft battery and the
transceiver.
Check operation after installation.
Install the transceiver according to the procedures of this in-
stallation guide.
The antenna should be spaced at least 40 cm (1.3 feet) from
any position occupied by
any person on board the aircraft or
the vehicle.
OR
1
13
14
25
1
13
14
25
Memory switch
Frequency exchange switch
Memory switch
Frequency exchange switch
3
3
Voltage sticker
MB-53
