The AA39-287 is asmall, remote mounted metal unit with D-sub connectors. The unit is designed to operate from standard mic bias, supplied by the aircraft radio and intercom systems.
The AA39-287 is a two military headset adapter, consisting of a 5 ohm dynamic military mic to general aviation 150 ohm amplified dynamic mic adapter, with an 8 ohm to 600 ohm transformer for phones matching.
Dual military Lo-Z to general aviation Hi-Z headset adapter
2 mic inputs - 250 microVrms into 5 ohm
2 phones outputs - 0.8 Vrms into 8 ohm
2 mic outputs - 250 microVrms into 150 ohm
Powered by mic bias
2 phones inputs - 7.7 Vrms into 600 ohm
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