• Year
  • 1927
  • Category
  • Detector-Radio (Crystal or diode, without tubes/transistors)
  • Radiomuseum.org ID
  • 70610
    • Brand: ESS

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

 Technical Specifications

  • Main principle
  • Crystal or Solid State Detector
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: Hjärteress - Eric Sundberg AB, Sigtuna ESS
  • Dimensions (WHD)
  • 5.6 x 3.2 x 6.4 inch / 142 x 81 x 163 mm
  • Notes
  • The company Eric Sundberg was manufacturing radio parts, but only one radio, the crystal set in two versions, with and without longwave. A very nice set of good quality. The name ESS intergrades in the name of the crystal set, Hjärter Ess, which is the swedish för Ace of Hearts. The marks on the detector and the set is a red heart. This particular one has a switch for MW and LW. Total frequency range 175-2000 meter.
  • External source of data
  • Own collection
  • Literature/Schematics (1)
  • -- Original-techn. papers.

 Collections | Museums | Literature


The model Hjärteress is part of the collections of the following members.


Forum contributions about this model: Eric Sundberg AB,: Hjärteress

Threads: 1 | Posts: 1

Die Marke ESS hat nichts mit Stern & Stern zu tun. Sie gehört zu Erik Sundberg Sigtuna. So geschrieben und in Bakelit gepresst oben am Gerät zu lesen.

Konrad Birkner † 12.08.2014, 08.Aug.07

Weitere Posts (1) zu diesem Thema.