• Year
  • 1928
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 51023

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • TRF without regeneration; Neutrodyne
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 522 - Philco, Philadelphia Stg. Batt
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Notes
  • Model 522 was part of Philco's first family of radio receivers introduced in 1928. It has a common chassis with all other 1928 Philco radio models. Model 522 is similar to model 512 with Mandarin red cabinet, but has a power supply designed for 110 V 25/30/40 cycles AC. One dial (primary tuning control knob).
  • Price in first year of sale
  • 135.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 8 = 1937 and before

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