• Country
• United States of America (USA)

• Manufacturer / Brand
• Fansteel Products (Pfanstiehl, Pfansteihl, Balkite, Balkeit); Chicago

• Year
• 1928

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 33973

• • alternative name: Balkeit || First National
  • Brand: Overtone

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

• Number of Tubes
• 9

• Valves / Tubes
• UX201A UX201A UX201A UX201A UX201A UX210 UX250 UX281 UX281

• Main principle
• TRF without regeneration; Neutrodyne

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• -Loudspeaker incorporated, but system not known.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Balkeit Symphion B7 - Fansteel Products Pfanstiehl,

• Shape
• Console with any shape - in general

• Notes
• Balkeit, Balkite, Pfanstiehl are put together to Fansteel. One dial (primary tuning control knob).
  The Symphion models employ a UX210 tube as an oscillator at about 3000 kHz, to supply the filaments of the five 201As ! Thus avoiding hum and permitting use of the 201A (which is considered superior) in an electric set.

• Price in first year of sale
• 475.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition

• Literature/Schematics (1)
• Radio Manufacturers of the 1920's, Vol. 2

• Other Models

• Here you find 131 models, 74 with images and 61 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Fansteel Products (Pfanstiehl, Pfansteihl, Balkite, Balkeit); Chicago