K-70 Series 70

United Reproducers Corp. (Peerless); Rochester, NY and Springfield, OH

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  • Year
  • 1930
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 64581

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 9
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Tuned circuits
  • 4 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • Loudspeaker
  • Electrostatic Loudspeaker (high bias DC voltage)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: K-70 Series 70 - United Reproducers Corp.
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Dimensions (WHD)
  • 29.6 x 42.6 x 0 inch / 752 x 1082 x 0 mm
  • Notes

  • The K-70 Series was United Reproducers' last attempt to gain a large share of the radio receiver and speaker market. The two models in the series were the K-71 and K-72, also known as the Kylectron 71 and Kylectron 72. These models were identical in every respect except that the K-72 had front folding doors while the K-71 had an exposed grille.

    These receivers both had United Reproducers' unique, patented Kylectron electrostatic speaker. In the last months of 1929 the Kylectron speakers were optionally available in United Reproducers' Peerless and Courier receivers. The K-70 series radios had phono input, push-pull AF output stage, and an unknown type of ballast tube.

    When the K-70 advertising campaign started, the company was already in receivership. The radio market was intensely competitive and the country was facing the Great Depression when the receivers were first available to dealers. Few K-70 radios were sold before United Reproducers discontinued its operation.

  • External source of data
  • Ernst Erb
  • Source of data
  • -- Original prospect or advert
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
  • Mentioned in
  • -- Original prospect or advert (The Talking Machine and Radio Weekly, Feb 26, 1930 p10 "New Kylectron Set Line...")

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