• Country
• United States of America (USA)

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

• Year
• 1945 ?

• Category
• Military Equipment (not Re, Tr or RXT)

• Radiomuseum.org ID
• 215518

Click on the schematic thumbnail to request the schematic as a free document.

• Wave bands
• - without

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: J-68/ARC-3 Power Junction Box for ARC-3 VHF Radio - MILITARY U.S. different makers

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 260 x 180 x 200 mm / 10.2 x 7.1 x 7.9 inch

• Notes
• Power Junction Box for AN/ARC-3 VHF Radio.
  
  The Junction Box serves as the junction point for all interconnecting cables between the receiver, transmitter, power source and control panel.
  On top of the unit are 2 dynamotors mounted which supply the anode voltage for receiver and transmitter.
  
  DY-22/ARC-3 is the smaller of the two dynamotors. it runs continuously to supply the receiver with 210 VDC. DY-21/ARC-3 is the larger of the two units to supply the transmitter with 410 VDC. It is energized only when the PTT key is pressed.
  
  Variant J-68A/ARC-3 is identical to the basic unit except for different fuse holders.
  
  Power consumption (28 VDC) : receiving 5.5 A / transmitting 12 A
  The total weight of approx. 20 lb does include both dynamotors.

• Net weight (2.2 lb = 1 kg)
• 20 lb (20 lb 0 oz) / 9.080 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 393 models, 345 with images and 210 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)