WWII U.S. Army Signal Corps Bendix I-81-A Radio Compass Indicator

For sale is an authentic WWII-era Bendix I-81-A Radio Compass Indicator, a critical navigation instrument used by the U.S. Army Air Forces during the Second World War. Manufactured by the Bendix Aviation Corporation in Baltimore, MD, this piece bears the markings of the U.S. Army Signal Corps, with the order number “162-WFSP-42,” dating its production to 1942. Designed for use in iconic aircraft such as the B-17 Flying Fortress, B-24 Liberator, or C-47 Skytrain, this radio compass played a vital role in helping pilots navigate long distances by homing in on radio signals from ground-based stations.

The indicator features a 360-degree dial with a needle to display the relative bearing to a tuned radio station, labeled “RADIO COMPASS” in classic WWII-era lettering. The unit shows authentic wear and patina, with visible dirt, minor corrosion, and signs of use that speak to its history in active service. The bottom of the device includes a PL-118 connector, used to interface with the aircraft’s radio receiver system, and the original label remains intact, providing a clear provenance.

This Bendix I-81-A is a fantastic addition to any collection of military antiques, WWII memorabilia, or aviation history artifacts. Its rugged condition and historical significance make it a unique conversation piece for enthusiasts, historians, or anyone passionate about the technology that helped win the war in the skies. Don’t miss this opportunity to own a genuine piece of WWII aviation history!

Condition: Used, with authentic wear consistent with wartime service. No significant damage; needle and dial are intact, though the unit has not been tested for functionality.

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