ICOM A3, A6, A15, A22, and A24
NOT USED
(INTERCOM
CENTRAL
GROUND
POINT)
INTERCOM
CIRCUIT
BREAKER
(1 AMP)
AIRCRAFT / INTERCOM
INTERFACE AREA
TO
AIRCRAFT
HEADPHONE
JACK
SEE NOTE 3
220 Ohm
* 1/4
watt
1.IF PILOT PTT SWITCH IS CONNECTED TO THE AIRCRAFT HAND
MIC JACK, IT MUST BE DISCONNECTED AND CONNECTED TO THE
WHITE / RED WIRE AS SHOWN.
(4) BLACK
(7) RED
ON
VOL
TO
MIC AUDIO
Resistor
RADIO MIC KEY
RING
AIRCRAFT CHASSIS GROUND.
3.SEE RADIO MANUFACTURERS INSTALLATION INSTRUCTIONS
FOR ALL POWER, GROUND, AND ANY ADDITIONAL HOOKUPS.
SQ
3.5 mm
2.5 mm
NOTES
2.
HEADPHONE AUDIO
TIP
POINT A
TO AIRCRAFT
POWER BUSS
12 / 28 VDC
TIP
AIRCRAFT
HAND MIC
JACK
4.THIS INSTALLATION DIAGRAM IS FOR A SINGLE RADIO SYSTEM
WITHOUT AUDIO PANEL.
PILOT
PTT SWITCH
(3) BLUE
P1
(6) BROWN
J1
(5) WHITE
CO-PILOT
PTT SWITCH
TO
TO
(2) WHITE / RED
INTERCOM
SPA-400
SPA-400
INTERCOM
(10) WHITE / BLUE
)T
AN
(1) WHITE / BLACK
(9
(11) WHITE / ORANGE
(8) TAN
(3) BLUE
TO
TIP
RING
TIP
BARREL
HEADPHONE
JACK
TIP
BARREL
MIC
JACK
TO
RING
TIP
BARREL
BARREL
HEADPHONE
JACK
PASSENGER 2
MIC
JACK
TO
TIP
TO
TIP
RING
BARREL
TIP
BARREL
BARREL
MIC
JACK
HEADPHONE
JACK
BARREL
MIC
JACK
HEADPHONE
JACK
CO-PILOT
PASSENGER 1
TIP
RING
PILOT
SPA-400 – ICOM A3, A6, A15, A22, A24 Radio Installation Wiring Diagram
*ICS Load Modification. Add a 1/4 or 1/2 watt resistor per the drawing. The value of the resistor most commonly used is 220 ohms, however, optimum performance can be achieved by selecting the value right for your
particular installation. The resistor can be any value between 100 and 1000 ohms and is selected for the best balance between radio receive volume and intercom volume.
For more information about this resistor mod see the ICS Load Modification instructions. File Name: ICS-Load_1440_Mod.pdf
Sigtronics Corporation
178 East Arrow Highway
San Dimas, CA 91773
Telephone: (909) 305-9399
E-mail: [email protected]
Web: www.sigtronics.com
S igtronics ®
The above information has been checked for accuracy, however it is presented for use as is. Sigtronics is not liable for
damage to radio equipment using this data. It is the sole responsibility of the technician to verify the usability of this
information for their particular radio.
10-6-2015
SPA-400_ICOM_A22_Inst.pdf
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement