WWII Signal Corps Interphone Amplifier BC-367

WWII RT-27/APG-4 Airborne Radar Receiver-Transmitter Unit – 26 Volt DC Aircraft Radar Component

Original WWII-era RT-27/APG-4 Receiver-Transmitter unit from the U.S. Army Air Forces APG-4 airborne radar system. This substantial electronic component was designed for use in aircraft radar installations and represents an important piece of early airborne radar technology developed during World War II.

The front panel is clearly marked:

• RT-27/APG-4
• 26 Volts DC
• Transmitter Antenna
• Receiver Antenna
• Relay Output
• Battery Input
• Alternate Compensation Controls
• High Voltage Warning Plate

The APG-4 radar system was part of the rapid wartime advancement in airborne electronics, providing radar capability for military aircraft. Components from these systems are increasingly difficult to locate, particularly complete rack-mounted units retaining original identification plates, controls, connectors, and finish.

This example retains its original black wrinkle-finish military paint, identification tag, antenna connections, fuse holders, adjustment controls, and rack mounting handles. The unit displays well and would make an excellent addition to any WWII radar, aviation, Signal Corps, or military electronics collection.

Condition

• Original WWII military radar component
• Untested and sold strictly as a historical collectible
• Original finish with expected storage and handling wear
• Identification plate remains intact and legible
• Connectors, controls, and mounting hardware present
• No restoration noted
• Please review photographs carefully for overall condition

Collector Interest

Ideal for:

• WWII radar collectors
• Army Air Forces memorabilia collectors
• Military aviation enthusiasts
• Signal Corps collections
• Museum displays
• Restoration and research collections

An increasingly scarce survivor from the golden age of wartime radar development and military electronics.