• Country
• Netherlands

• Manufacturer / Brand
• Stokvis & Zonen, brand Erres; Rotterdam: Trading only!

• Year
• 1923

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 70062

• Number of Tubes
• 2

• Valves / Tubes

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case, TUBES VISIBLE.

• from Radiomuseum.org
• Model: Erres II - Stokvis & Zonen, brand Erres;

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes
• Information taken from Maker information. Picture Nr.: 004.12. This is the same model as NSF O40

• External source of data
• Radio Amateur Museum / Frans J.J. Driesens + ISBN 90-76014-04-3.

• Source of data
• Opkomst van de Nederlandse Radio-Industrie

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 29 models, 26 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Stokvis & Zonen, brand Erres; Rotterdam: Trading only!