Tuning Unit, MC-125 for Receiving and Transmitting Command Set SCR-AJ(and AL)-183 Douglas

Tuning Unit, MC-125 for Receiving and Transmitting Command Set SCR-AJ(and AL)-183 DouglasThe MC 125 Tuning Unit is a component of the WWII era airborne communication system Receiving and Transmitting Command Set SCR AJ(and AL) 183, as used in the C 47 Dakota Transport with a similar version used in the TBM Avenger Torpedo Bomber. This remote tuner was typically positioned within arms length distance of the pilot in order to mechanically tune the receiving radio to the desired frequency. By turning the crank, the faceplate rotates to

In such compasses

spec number AN-G-31a

Here is an electrical Directional Gyro/Turn Indicator marked AF USARMY (Air Forces US Army)

The face is embossed BU AERO US NAVY (i

type T-203

25inches diameter by ~5inches deep

with a maximum airspeed of ~900 km/h

Marked US Navy

See photo of the A-20G Instrument Panel from the A-20G Erection and Maintenance Manual showing the indicator for the port engine next to the one for the starboard engine

The Pilots Radio Compass Indicator

The US Navy Anchor logo is stamped on the back and on the face is embossed "BU AERO US NAVY" (Bureau of Aeronautics)

The knurled center knob was then tightened to secure it in place