• Year
  • 1922
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 309330
    • alternative name: Lee De Forest Mfg.

 Technical Specifications

  • Number of Tubes
  • 1
  • Main principle
  • Audio-Amplification; 1 AF stage(s)
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries / 6 & 60 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Interpanel One Step Amplifier MP-200 - DeForest Radio Telephone &
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 120 x 260 x 270 mm / 4.7 x 10.2 x 10.6 inch
  • Notes
  • On MP-200 are mounted a new type moulded tube receptacle, a new type smooth-running filament rheostat, a standatd amplifying transformer, two telephone jacks.

    Plugging the phones into one jack gives unamplified signals and into the other amplified signals.

    The panel of MP-200 is so designed that other steps of amplification may be set beside it without the creation of howling due to reaction between the fields of amplifying transformers.

    Two of these panels comprise a neat, efficient two-step amplifier.

  • Net weight (2.2 lb = 1 kg)
  • 6 lb 0 oz (6 lb) / 2.724 kg
  • Mentioned in
  • - - Manufacturers Literature

 Collections | Museums | Literature

Collections

The model Interpanel One Step Amplifier is part of the collections of the following members.

 Forum