• Country
• United States of America (USA)

• Manufacturer / Brand
• MILITARY U.S. (different makers for same model)

• Year
• 1945 ?

• Category
• Power supply/conditioner or battery or charger 

• Radiomuseum.org ID
• 215515

• Power type and voltage
• Direct Current supply (DC) / 28/410 Volt

• Material
• Metal case

• from Radiomuseum.org
• Model: DY-21/ARC-3 Dynamotor for ARC-3 VHF Radio - MILITARY U.S. different makers

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 7.5 x 4 x 3.5 inch / 191 x 102 x 89 mm

• Notes
• Dynamotor DY-21/ARC-3 is located on J-68/ARC-3 Power Junction Box that forms part of the AN/ARC-3 VHF Radio.
  
  It is used to supply the Transmitter T-67/ARC-3 with 410 VDC during transmission (operated by the PTT line).
  
  Power connections are provided by a three-pin socket, on the bottom of the dynamotor base. Four snap-slide fasteners secure it to the chassis.

• Net weight (2.2 lb = 1 kg)
• 8.4 lb (8 lb 6.4 oz) / 3.814 kg

• Mentioned in
• -- Original-techn. papers. ((AN 16-30 ARC3-2))

• Author
• Model page created by Franz Harder. See "Data change" for further contributors.

• Other Models

• Here you find 402 models, 354 with images and 211 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.S. (different makers for same model)