• Country
• Netherlands

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

• Year
• 1952

• Category
• Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter

• Radiomuseum.org ID
• 119938

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

• Number of Tubes
• 5

• Valves / Tubes
• EF80 ECC81 EF80 EF80 EB91

• Main principle
• Superhet with RF-stage; ZF/IF 17000 kHz

• Tuned circuits
• 9 FM circuit(s)

• Wave bands
• FM Broadcast Band Only

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: FM521 - Erres, Van der Heem NV; Den

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 330 x 120 x 60 mm / 13 x 4.7 x 2.4 inch

• Notes
• FM unit for building into Erres receivers KY525, KY5265 and KY529

• Net weight (2.2 lb = 1 kg)
• 1.9 kg / 4 lb 3 oz (4.185 lb)

• Source of data
• - - Manufacturers Literature

• Literature/Schematics (1)
• -- Original-techn. papers.

• Other Models

• Here you find 405 models, 324 with images and 213 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