Icom IC-A220 Installation Manual

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 andm 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

• Two headsets with intercom

External 

speaker

Intercom switch

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