Functional HS-18 headset for Tanker Helmet and some Flight Helmets.

The HS-18 headset was designed for use with the US M1938 tanker helmet, and with early flight helmets with leather pockets, such as B-5, B-6, A-7 and A-8. We have made these with fully functional wiring and plug AND with a speaker inside the R-14 receivers that will work for some applications.