• Year
  • 1933
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 35522

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 175 kHz
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: 250 AC - Colonial Radio Co.; Long
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Dimensions (WHD)
  • 260 x 200 x 120 mm / 10.2 x 7.9 x 4.7 inch
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 4 = ca. 1934 and before

 Collections | Museums | Literature

Collections

The model 250 AC is part of the collections of the following members.

 Forum

Forum contributions about this model: Colonial Radio Co.;: 250 AC

Threads: 1 | Posts: 1

En RMorg consta como de madera y es de bakelita, se alimenta a 125 v. c.a. las válvulas son: desconocida 78 75 43 25Z5. Las dimensiones son 26 x 22 x 14 cmts.

Francisco Gallego, 02.Oct.08

Weitere Posts (1) zu diesem Thema.