• Country
• United States of America (USA)

• Manufacturer / Brand
• Johnson Company, E.F.; Waseca, MN

• Year
• 1930 ??

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 205994

• • Brand: Viking

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Variable Air Capacitor 153-30-5 - Johnson Company, E.F.; Waseca,

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 4 x 4 x 13 inch / 102 x 102 x 330 mm

• Notes
• This is a 0 to 850 picofarad high voltage (3500 volt), variable capacitor with .080 air gap between plates used for output stage/antenna tuning in high-powered transmitters.

• Net weight (2.2 lb = 1 kg)
• 1.4 lb (1 lb 6.4 oz) / 0.636 kg

• Author
• Model page created by Hank Kaczmarski. See "Data change" for further contributors.

• Other Models

• Here you find 66 models, 56 with images and 29 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Johnson Company, E.F.; Waseca, MN