INT-10
1. Microphone Plug
2. Transmit Switch Plug Portable Transmit Switch
3. Headphone Plug
4. Squelch Control
5. On/Off Power Switch
6. Volume Control
7. Headphone Plug
8. Audio Output
9. Transmit Switch Plug
10. Audio Input
11. Microphone
12. Aux In
13. Power Input Cord
14. Audio (Headphone) Input Cord
15. Microphone Output Cord
Intercom Description
This unit allows communications between:
-- pilot and passengers;
-- pilot to pilot within cockpit;
-- pilot to communication tower.
The intercom is characterized by:
-- aircraft powered operation with possibility of internal 9V battery
operations, in case of aircraft power failure;
-- 4 feet power cord for airplanes with cigarette lighter socket;
-- voice activation to initiate communication;
-- compatibility with P.T. Switch in transmit mode;
-- fail safe radio communications while intercom is off, allowing the
pilot
to hear all radio communications and to respond by means of the
headset boom microphone;
-- auxiliary audio input;
-- auxiliary audio output;
-- power cord for aircraft cigarette lighter.
Physical specifications of the intercom are:
-- weight: 14 oz;
-- size: 4" x 2.9" x 2";
-- power: 11-34 VDC;
-- max current drain 0.05 amperes (up to 40 hours operation in battery
mode);
-- comopatible with most applicable environmental specifications.
The intercom is controllable by:
-- on/off power switch;
-- volume control;
-- squelch control for the variation of background noise.
DOWNLOAD THE INT-10 WIRING DIAGRAM (right click and choose "save as target")
PLUG
PIN# |
WIRE
COLOR |
FUNCTION |
CONNECT
TO: |
1 |
White/Black | Pilot Mic Input |
Ring Terminal of pilot Intercom Mic Input Jack |
2 |
White/Red*A | Pilot Transmit Switch Input | Pilot Transmit Switch (PTT) (Switch to Ground to Transmit) |
3 |
Blue*B | Headphones - Radio and Intercom Output | Radio Headphone Output and all Headphone Jacks |
4 |
Black*C | Ground | Hand Mic JackGround Terminal (Point A) |
5 |
White*D | Transmit Relay (Key) Control Output | Tip Terminal of Aircraft Mic Jack or Key Input of Aircraft radio or Audio Panel |
6 |
Brown | Mic Audio Output | Ring Terminal if Aricraft Mic Jack or Input of Aircraft Radio or Audio Panel |
7 |
Red*E | 12 Through 24 VDC Power Input | Intercom Circuit Breaker |
8 |
Tan*F | Passenger#1 Mic Input | Ring Terminal of Passenger#1 Mic Jack |
9 |
Tan*F | Passenger#2 Mic Input | Ring Terminal of Passenger#2 Mic Jack |
10 |
White/Blue | Co-Pilot Transmit Switch | Co-Pilot Transmit Switch (PTT) |
11 |
White/Orange | Co-Pilot Mic Input | Ring Terminal of Intercom Co-Pilot Mic Input Jack |
12 |
No Connection | ||
Table
1 - * See Wiring Instructions |
|||
MOUNTING HEADPHONE AND MICROPHONE JACKS:
1. Select mounting areas. (One mic and one headphone jack for each headset)
Again, make sure the jacks will not interfere with aircraft control components.
2. Drill 3/8¡¨ diameter holes for headphone jacks and install.
3. Drill 1/2¡¨ diameter holes for mic jacks and install with insulating
washers supplied.
WIRING INSTRUCTIONS
Connections should be made as shown in page 1 and indicated in Table 1
*A. White/red (pilot push-to-talk) must correspond with white/black (pilot
mic input) as shown.
*B. The blue wire from Pin 3 must be connected to the aircraft radio headphone
output ¡V NOT the speaker output.
*C. Connect intercom mic jack grounds to Point A as shown in the figure.
(Use black washers supplied to insulate intercom mic jacks from aircraft
chassis ground).
*D. Do NOT connect transmit switches to white (key) wire.
*E. Red wire may be connected to either 12 (14C) or 24 (28V) power source.
No switching or adjustments are required to operate from either source.
*F. Tan wires from Pins 8 and 9 are only used on 4- way installations.
FINAL CHECKOUT AND ADJUSTMENT
After the unit is installed, again check that the intercom chassis, jacks,
and wiring hamess are clear of all aircraft operating controls and cause
no interference with them. Check out the intercom functions by following
the Operating Instructions.
It may be necessary at this time to adjust the intercom mic output to
the aircraft radios. A small, square, adjustable trimmer potentiometer
is provided inside the unit for this purpose. It is accessible through
a hole in the side of the case, marked ¡§ Mod. Adj.¡¨ And can be adjusted
with a screwdriver. In the event of overmodulation (garbled) or reports
of weak transmissions over the aircraft radio, an appropriate adjustment
can be made. Clockwise rotation increases the output level to the aircraft
radio mic input Counter-clockwise rotation decreases modulation level.
This adjustment sometimes needs to be made after initial installation
of the intercom or if a new radio is installed.
Weight: Intercom with panel and knobs (4 oz.)
