(you see the content of the German site for this purpose)
Radio Craft Books , Radio Magazines , Radio Experiments in the Roaring Twenties
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Telefunken served the broad market of schools and universities early on. In a separate division, models and teaching equipment were produced for teaching, laboratory and experimental purposes. Even such an impressive, fully functional transmitter “on the board” (1kW!) was included:
But smaller versions with “only” 10 watts were also available. (both image source: Collages of DL2SWR based of “Telefunken-Stationen und Geräte”/ Funkentechnische Lehrgeräte von 1919 online: https://www.cdvandt.org/Tel-Buch-1919-Teil-3-2.pdf )
Others took care of the much larger area, that of private hobbyists.
in work…
| Bezeichnung | Untertitel | Jahr | |
| Radio-Kosmos
(Franckh Verlag) |
 Bausätze für Rundfunkempfänger |
ab 1920 | |
| Franckh’sche Verlagsbuchhandlung W. Keller & Co | Herausgabe pädagogisch ausgerichteter Experimentierkästen | ab 1921 | |
| Radiobaukasten |
|
1924 | |
| Radiofee |
|
ab 1924 | Link |
| Saba Radiobausätze |
|
Link | |
| Der Radiomann Zur “Radiomann” – Story Aldo Diener HB9AQM aus HBradio 5/2014 |
 |
Link | |
| Telefunken-Stationen und Geräte | Funkentelegraphische Lehrgeräte | 1919 (!) | Link |