20 (20B) Baby Grand Cathedral, early

Philco, Philadelphia Stg. Batt. Co.; USA

Data
Forum
Pictures
Collections

  • Year
  • 1930/1931
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 50477

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • TRF without regeneration; Screengrid 1926-1935
  • Tuned circuits
  • 3 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: 20 Baby Grand [Cathedral, early] - Philco, Philadelphia Stg. Batt
  • Shape
  • Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
  • Dimensions (WHD)
  • 16 x 17.5 x 10 inch / 406 x 445 x 254 mm
  • Notes

  • Philco's first "cathedral" type cabinet. One dial (primary tuning control knob).

    The "-B" (for "Baby Grand") suffix for cathedrals was not used by Philco until later models, although some collectors may call this model "20B".

    For the model 20 series, Philco used the term "Baby Grand" for both the cathedral and console versions, unlike later models where "Baby Grand" was used exclusively for cathedrals.

    Stein "Cathedral & Tombstone Radios" lists 6 tubes.

  • Net weight (2.2 lb = 1 kg)
  • 12.5 kg / 27 lb 8.5 oz (27.533 lb)
  • Price in first year of sale
  • 49.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
  • Literature/Schematics (1)
  • Machine Age to Jet Age II (Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data)

 Collections | Museums | Literature

Collections

The model 20 (20B) is part of the collections of the following members.

 Forum

Forum contributions about this model: Philco, Philadelphia: 20 Baby Grand

Threads: 1 | Posts: 6

Gentleman administrator,

I believe that the pictured Philco Model 20 is a "Deluxe" model as indicated on http://archives.radioattic.com/archive_p1.htm.  I discovered this while I tried to figure out how to upload information on my most recent restoration, a Model 20 (non-deluxe model). 

If some one would be so kind as to help me figure out how to contribute a picture and information for a standard Philco model 20 I would be appreciative.

Please see http://www.ppinyot.com/philco20/philco_20.htm for additional images and a restoration story.

Thanks,
Paul

Attachments

Paul E. Pinyot † 2013, 03.Jun.05

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