Echophone V-3

Radio Shop, The (Echophone); Sunnyvale, CA

Data
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Pictures
Collections

  • Year
  • 1924/1925
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 37977
    • Brand: Leroy

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • TRF with regeneration; 2 AF stage(s)
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / "C" 1 x 4.5 volts & "A" 3 x 1.5 & "B" 4 x 22.5 V Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Wooden case, TUBES VISIBLE.
  • from Radiomuseum.org
  • Model: Echophone V-3 - Radio Shop, The Echophone;
  • Shape
  • Tablemodel, slant panel.
  • Dimensions (WHD)
  • 11 x 9 x 12.5 inch / 279 x 229 x 318 mm
  • Notes

  • The similar model sold as "Silvertone Meteor V3" by Sears & Roebuck.. The manufacturer was "The Radio Shop". Besides Sears, Echophone, and Radio Shop, also Armac sold this model. The model needs only dry cells, which was quite an advantage in 1924. Two dials as primary tuning control knobs, "Wavelength" and "Regeneration" and in the center below "Filament" rheostat.

    Early UV-199 tubes had 3-volt filaments and later they were rated at 3.3-volt filaments. Using two 1.5 volt cells provides only 3 volts and this decreases as the battery wears out.  The radio has a filament rheostat that the operator turns up until the radio begins playing and doesn’t need to turn it up any further, so the tubes do not operate the full 4.5 volts.  With three 1.5 volt cells, they can partially wear out and still provide 3.3 volts to the radio, as adjusted with the filament rheostat.  This is very similar to using a 6-volt storage battery to run 01A tubes with 5-volt filaments, as most radios with 01A tube used.

     

  • Net weight (2.2 lb = 1 kg)
  • 6 kg / 13 lb 3.5 oz (13.216 lb)
  • Price in first year of sale
  • 50.00 $
  • External source of data
  • Ernst Erb
  • Literature/Schematics (4)
  • January 1925 Radio Broadcast magazine advertisement page 562

 Collections | Museums | Literature

Collections

The model Echophone V-3 is part of the collections of the following members.

 Forum

Forum contributions about this model: Radio Shop, The: Echophone V-3

Threads: 1 | Posts: 1

Maße: 290 / 220 / 390; Mittelwelle; 1-Kreiser mit RK; 3 Röhren: UV199 / UV199 / UV199; im Innern des Kästchens Fach für Trockenbatterien;

Konrad Birkner † 12.08.2014, 05.Mar.04

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