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[Dat Nguyen]

FYI,

I tried for years to get a ShL/ShZ leather flight helmet to work on a generation aviation airplane. Unless you are really good with making an impedence converter for the soviet microphones, I found no suitable converters for sale to make these flight helmet works properly. Attempts to find a replacement high impedence throat microphones, set me back about $100.

I ended up replacing the earphones with the ones salvaged from a BOSE 1st generation ENC headphones. The throat microphone used by the Army Air Corp from WWII will works, but you will sounds like donald duck. I gave up and installed a standard microphone and boom from David Clark. I'll post a picture shortly.

Dat