• Country
• Switzerland

• Manufacturer / Brand
• Maxim; Aarau

• Year
• 1923/1924

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 31033

• Number of Tubes
• 3

• Valves / Tubes

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); 2 AF stage(s)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / 4 & 80 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: E51 - Maxim; Aarau

• Notes
• Otto Kippes: Bild: "Der praktische Radioamateur", Franckh'sche VB Stuttgart. Text: Ist E52 aber nur für 300-500 m; var.Kopplung, Heizwiderstand, Drehko, Stufenschalter f. Grobabst.

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Literature/Schematics (1)
• Der praktische Radioamateur (1. Auflage, 1923, S.198)

• Other Models

• Here you find 41 models, 33 with images and 17 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Maxim; Aarau