WWII SA-4A/APA-1 Radar Antenna Signal Switch Unit

WWII SA-4A/APA-1 Radar Antenna Signal Switch Unit 24V DC Auto-Lite Aircraft Radar Component

Description:

Original WWII-era U.S. military SA-4A/APA-1 Signal Switch assembly, a specialized component used in airborne radar and electronic systems. This unit is part of the APA-1 radar equipment family and features a heavy-duty Auto-Lite 24-volt DC motorized switching mechanism designed to route antenna and video signals within military radar installations.

The front panel is clearly marked:

• SA-4A/APA-1
• 24 Volts DC
• ANT. PORT-L
• ANT. STBD-R
• REC. ANT.
• VIDEO INPUT
• VIDEO-L
• VIDEO-R

The rear-mounted Auto-Lite signal switch is marked:

• Auto-Lite, Toledo, Ohio
• Signal Switch
• 24 Volts D.C.
• 1800 R.P.M.

This is a substantial and well-built piece of WWII electronics engineering featuring original military connectors, wiring, and data plates. Ideal for collectors of airborne radar equipment, Army Air Forces artifacts, aviation electronics, Signal Corps displays, museum exhibits, or restoration projects involving WWII radar systems.

Condition:

• Original WWII military surplus component.
• Untested and sold as a collectible display item.
• Shows honest age, storage wear, and light oxidation consistent with military surplus equipment.
• Data plates remain clear and legible.
• Retains original connectors and switch assembly.
• Please review all photographs carefully for condition details.

Dimensions:

Approx. 8” x 8” x 8” (estimate)

Historical Notes:

Components from the APA-series radar systems were used aboard U.S. military aircraft during World War II for navigation, interception, and radar training applications. Individual components such as this are becoming increasingly difficult to locate, particularly with intact identification plates and original hardware.