Aircraft Intercom Wiring Diagram

The wiring diagram shows how to wire the spa 4s for use with a portable stereo music source. Use the black washers supplied to insulate the intercom mic jacks from aircraft chassis ground. For r emergency use only 1 i pilot i i i i i i i i i i w y.

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Cable assem bly terminated into a db25 pin connector.

Aircraft intercom wiring diagram. Finally install new headset jacks into the aircraft and connect them directly to the appropriate pins of the pm1000. Intercom aircraft panel washers 2 nuts 2 knobs 2 6 32 non magnetic screws 4 through panel or under panel mounting the intercom can be mounted in any 5 5 inch deep 1 2 inch by 2 5 inch space. I i i musiciaux source. Intercom wiring diagram i 4 intercom fuse fused cable 14 or 28v aircraft power see wiring note 3 aircraft power ground buss to tape recorder optional copilot phone aircraft existing jacksiswitches pass.

Note this intercom central grounding point is used to. Experimental pm1200 specialty intercom intended for use in open cockpit aircraft and extremely loud aircraft. Pm3000 hi fi stereo intercom provides karaoke mode as well as four or six place capability. It can be placed either verti cally or horizontally in or under the aircraft instrument panel or in any other accessible location in the aircraft.

For a completely new intercom installation continue below. Pm1000ii most popular of our intercoms because of the individual volume and squelch controls as well as moderate price. To connect intercom into the aircraft audio system parallel the appropriate set o f cables from the intercom to the auxiliary aircraft radio headset jacks. These intercoms are supplied w a pre tested 8 ft.

It can be placed either verti cally or horizontally in or under the aircraft instrument panel or in any other accessible location in the aircraft. See the wiring diagram for all details of the wire harness inter connects. However a second function was needed on the microphone in the form of a push button to key the transmitter and effect a changeover from receive to talk. Select a value between 220 and 560 ohms for.

Intercom aircraft panel washers 2 nuts 2 knobs 2 6 32 non magnetic screws 4 through panel or under panel mounting the intercom can be mounted in any 5 5 inch deep 1 2 inch by 2 5 inch space. The atc 2p atc 4p and atc 6p panel mounted intercoms come complete with mounting instructions wiring diagrams all required microphone headphone jacks audio recorder jacks and bi directional mount ed nomenclature plates. After the unit is installed again check that the intercom chassis jacks and wiring harness are clear of all aircraft operating controls and cause no interference with them. The first aircraft radios used carbon granule microphones almost identical to microphones used on telephones.

Connect all intercom mic jack grounds to a single aircraft chassis ground point intercom central ground point a as shown in figure 4. Aircraft panel intercom panel switch nut knob knob intercom figure 2. Check out the intercom functions by following the operating instructions. A small stereo input.

2 phone not used with pc 4. 3 the blue wire. It may be necessary at this time to adjust the intercom mic output to the aircraft radios. Hence the name push to talk or ptt switch.