Hjärteress

• Country
• Sweden

• Manufacturer / Brand
• Eric Sundberg AB, Sigtuna (ESS)

• Year
• 1927

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 70610

• • Brand: ESS

• Picture
• Schematics

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

• 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.

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 3 models, 3 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Eric Sundberg AB, Sigtuna (ESS)