Radio Transmitter BC-778-D, Gibson Girl, of SCR-578-A Sea Rescue Set Japanese this appears very similar to

this appears very similar to the MkXVII type

and aircraft systems

This booklet was written

Being partially a gyro instrument it has

Radio Transmitter BC-778-D, Gibson Girl, of SCR-578-A Sea Rescue Set Japanese this appears very similar toThis is an authentic WWII era BC 778 A Emergency Radio Transmitter, a component of the SCR 578 A Sea Rescue Radio Set. Later designated the T 74 of the AN CRT 3 system. This was stored in any aircraft of the US Army Air Force or US Navy that may fly over water. According to the US Army Air Force Airborne Radio Equipment Manual 1943: Radio set SCR 57B A is a hand powered, emergency transmitter designed for operation in a small boat or life raft. It