143

Federal Radio Corp. / Federal Telephone & Telegraph Co.; Buffalo, NY

Data
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  • Year
  • 1925/1926
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 40284
    • alternative name: Federal Recorder || Federal Tel. & Radio || Federal T&T
    • Brand: Orthosonic / Ortho-Sonic

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • TRF with regeneration; 2 AF stage(s)
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage and/or dry batteries / 6 & 90 Volt
  • Loudspeaker
  • Horn
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 143 - Federal Radio Corp. / Federal
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Dimensions (WHD)
  • 34.5 x 43 x 20 inch / 876 x 1092 x 508 mm
  • Notes

  • Two dials (primary tuning control knobs)

    The Federal Model 143 uses the same chassis as the Federal Model 141 in a larger console style cabinet with built-in horn speaker and battery storage compartment. 
     
    The chassis uses 5-UV01-A tubes, 2-RF, Detector, 2-AF.
     
    Circuit is regenerative (possibly not claimed so to avoid patent hassles)...
    Front panel control labelled AMPLIFICATION CONTROL is the regeneration control
    via RF amplifier grid bias adjustment. 
    3 internal rheostats are for RF, Detector & AF tube filament rheostats.
    2 big knobs on the front panel are for the antenna and interstage RF tuning capacitors.
  • Net weight (2.2 lb = 1 kg)
  • 138 lb (138 lb 0 oz) / 62.652 kg
  • Price in first year of sale
  • 330.00 $
  • External source of data
  • Ernst Erb
  • Literature/Schematics (1)
  • January 1926, Electrical Record Supplement magazine page 32

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