U.S. Transmission Line Coupler CU-281/APT – Radar Test Equipment

Offered here is an original WWII-era U.S. military transmission line coupler, marked:

“CU-281/APT – Transmission Line Coupler”

Manufactured by Gadgets, Inc., Dayton, Ohio

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🔍 Details:

• Model: CU-281/APT

• Type: Transmission Line Coupler

• Era: WWII (1940s)

• Markings: U.S. Property with clear data plate

• Connections:

• 50 Ohm Unbalanced Input

• 100 Ohm Balanced Output

• Construction: Heavy steel housing with original coax connectors

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📦 Condition:

• Untested

• Original finish with light wear and age patina

• Connectors intact and appear usable

• No major dents or structural damage

• Clean, displayable example with strong markings

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💡 Collector Notes:

• Used in radar and RF test systems for signal coupling and measurement

• Key component in WWII electronic calibration setups

• Great for:

• Radar system restoration projects

• WWII Signal Corps collections

• Technical display builds

• Components like this are often hard to source individually, especially with legible plates

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🚚 Shipping & Terms:

• Compact and easy to ship

• Ships secure or available for pickup at Whiskey Rebellion Antiques – Bedford, PA

FREE SHIPPING!