• Country
• Netherlands

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

• Year
• 1923

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 70071

• Main principle
• RF-Circuit or wave trap (separate, can also be an antenna with amp.)

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

• Notes
•  

• Price in first year of sale
• 22.00 Hfl

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

• Source of data
• -- Original prospect or advert

• 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!