• Year
  • 1922
  • Category
  • Detector-Radio (Crystal or diode, without tubes/transistors)
  • Radiomuseum.org ID
  • 40348
    • alternative name: Federal Recorder || Federal Tel. & Radio || Federal T&T
    • Brand: Orthosonic / Ortho-Sonic

 Technical Specifications

  • Main principle
  • Crystal or Solid State Detector
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Federal Jr. Crystal Receiver - Federal Radio Corp. / Federal
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 8.5 x 8.8 x 6 inch / 216 x 224 x 152 mm
  • Notes
  • There is also a matching Federal Jr.Amp.
    Crystal Receiver starting price of 25USD was later reduced to 20 USD;
  • Price in first year of sale
  • 25.00 $
  • External source of data
  • Ernst Erb
  • Literature/Schematics (1)
  • Radio Broadcast, June 1922, page 184
  • Literature/Schematics (2)
  • Radio Digest Illustrated, 1922 Aug. 26, p. 9

 Collections | Museums | Literature

Museums

The model Federal Jr. (Junior) can be seen in the following museums.

 Forum

Forum contributions about this model: Federal Radio Corp.: Federal Jr. Crystal Receiver

Threads: 2 | Posts: 3

I recently purchased a Federal Jr. crystal set at a radio meet. There are five binding posts on the top--a group of two and a group of three. Can someone tell me which posts are for headphones--the two?-- and which are for antenna and ground? Thank you.

Sam Pasternack, 20.Feb.07

Weitere Posts (2) zu diesem Thema.


The very early model was made of brass. Another hint for early models is a label at one of the small sides, showing all the  patents, applied to this unit.

Reiner Scholz, 01.May.06

Weitere Posts (1) zu diesem Thema.