Duodyne 770

Globe Electric Co.; Milwaukee, Wisconsin (Duodyne)

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  • Year
  • 1925
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 200583

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown); 2 AF stage(s)
  • Tuned circuits
  • 2 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
  • from Radiomuseum.org
  • Model: Duodyne 770 - Globe Electric Co.; Milwaukee,
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Dimensions (WHD)
  • 19.8 x 7.3 x 8.1 inch / 503 x 185 x 206 mm
  • Notes
  • This Globe model DuoDyne 770 variant has two primary tuning control knobs plus 4 additional knobs and ONE Jack sockets and an engraved DuoDyne front panel instead of a tag. An original add shows only one Jack socket oon one of the variants. See also the other variants listed of the model 770 - with and without the name DuoDyne - and with either upper row with 5 knobs, missing the left knob on the lower part - or having two small knobs on each, the lower and the upper row. We try to find out the different variants and then to put them into the right time sequence. What we don't know: See for instance the numbers on the two small knobs on the upper row - on one of the variants. Be careful to which variant of the 770 you load photos. Tell us please by placing a forum article to the model if you found an other variant we don't display yet - and we will split the model then.
  • Price in first year of sale
  • 55.00 $
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

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