4340 Radiodyne (Metal on/off switch) (Early TA and Binding Posts)

Atwater Kent Mfg. Co.; Philadelphia, USA

Data
Forum
Pictures
Collections

  • Year
  • 1923
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 197479

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • TRF without regeneration
  • Tuned circuits
  • 3 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Wooden case, TUBES VISIBLE.
  • from Radiomuseum.org
  • Model: 4340 Radiodyne - Atwater Kent Mfg. Co.;
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 31.5 x 6 x 10 inch / 800 x 152 x 254 mm
  • Notes
  • The first Part No. 4340 Radiodyne breadboard to come into production had an aluminum metal on/off switch and a unique TA unit. This green, 3-tube TA unit has a unique keying pattern for the tubes. Looking at the front of the TA unit, the left two of the tube key slots point to the rear of the board and the tube socket on the right the slot points to the right. Later breadboard models have one slot pointing to the left, one to the rear, and the tube socket on the right points to the right. This was done to simplify filament wiring. Finally, on very early Radiodynes, square aluminum plate switches, left over from the last run of the Models 4052 and 4066, were used instead of the familiar circular Bakelite switches. So, the Radiodyne can have either an aluminum or Bakelite switch.
  • Price in first year of sale
  • 88.00 $
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum