• Country
• Netherlands

• Manufacturer / Brand
• Erres, Van der Heem NV; Den Haag

• Year
• 1945

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 94557

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

• Number of Tubes
• 5

• Valves / Tubes
• ECH4 EF9 EBL1 1823 EM4

• Main principle
• Superheterodyne (common); ZF/IF 106 kHz

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110-245 Volt

• Material
• Bakelite case

• from Radiomuseum.org
• Model: KY-457 [Var. 1, ECH4] - Erres, Van der Heem NV; Den

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Notes

• There is also Var.2 using ECH21, EF22 and EBL21.  These tubes are successors  of  ECH4, EF9 and EBL1 respectively, with the same properties, except for the different tube base and top connector. All other components are the same and consequently the schematic and parts list for resistors and capacitors apply to both versions.

• Price in first year of sale
• 375.00 Hfl

• Mentioned in
• Technisch- Commercieel - Radio Vademecum Staleman

• Author
• Model page created by John Koster. See "Data change" for further contributors.

• Other Models

• Here you find 408 models, 325 with images and 221 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Erres, Van der Heem NV; Den Haag