Grimes Inverse Duplex (old)

Bristol Co., The; Waterbury (CT)

  • Year
  • 1923
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 34584

 Technical Specifications

  • Number of Tubes
  • 4
  • Valves / Tubes
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown); Reflex
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - This model requires external speaker(s).
  • from Radiomuseum.org
  • Model: Grimes Inverse Duplex - Bristol Co., The; Waterbury CT
  • Notes
  • One dial (primary tuning control knob). It is not clear if this set is identical or not with the "new" 1924 issue.
  • External source of data
  • Ernst Erb

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