Would anyone have the pinout and/or specs of the C152 passenger/pilot microphone jack? I'd also like to know what DC bias voltage, if any, the plane provides to the microphone.
Here's what I have so far, which may or may not be accurate:
Headphone side Plane Side
Sleeve GND GND
Ring MIC OUT/BIAS IN ???(?V)
Tip UNUSED? PTT?
I've dug through some Bendix/King nav/com radio manuals, but they don't tell you about what to expect on the plane side of things.