77A Lowboy

Philco, Philadelphia Stg. Batt. Co.; USA

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  • Year
  • 1930/1931
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 51158

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935
  • Tuned circuits
  • 4 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 115 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 77A Lowboy - Philco, Philadelphia Stg. Batt
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Notes
  • Model 77A was available in a table, a console (actually small highboy), and a lowboy cabinet (all three cabinets similar to model 76). Model 77 is similar, but with minor circuit differences. One dial (primary tuning control knob).
  • Price in first year of sale
  • 120.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
  • Literature/Schematics (1)
  • Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data

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