• Country
• United States of America (USA)

• Manufacturer / Brand
• High Frequency Laboratories (HFL); Chicago, IL

• Year
• 1929

• Category
• Power supply/conditioner or battery or charger 

• Radiomuseum.org ID
• 105564

• Number of Tubes
• 1

• Valves / Tubes
• 280

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 95-130 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: HFL Master Power Pack - High Frequency Laboratories

• Shape
• Chassis only or for «building in»

• Price in first year of sale
• 70.00 $

• Literature/Schematics (1)
• Western Radio Manufacturing Co. 1929 catalogue

• Author
• Model page created by Vitor Oliveira. See "Data change" for further contributors.

• Other Models

• Here you find 32 models, 10 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from High Frequency Laboratories (HFL); Chicago, IL