• Country
• Switzerland

• Manufacturer / Brand
• Derichsweiler, W., Radio Laboratorium: Zürich-Höngg

• Year
• 1924 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 154680

• Number of Tubes
• 4

• Valves / Tubes
• unknown_Tube unknown_Tube unknown_Tube unknown_Tube

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

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / 4 & 40 & 80 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case, TUBES VISIBLE.

• from Radiomuseum.org
• Model: 4-Röhrengerät - Derichsweiler, W., Radio

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

• Dimensions (WHD)
• 450 x 240 x 270 mm / 17.7 x 9.4 x 10.6 inch

• Notes
• Das 4-Röhrengerät von Derichsweiler zeigt die 4 Valvo-Röhren A408, doch ist diese Bestückung wahrscheinlich falsch. Gerät inkl. Röhren gemessen und gewogen. Es sind zwei NF-Trafos verbaut, Verhältnis 1:5 und 1:3. Die grosse Spule beinhaltet ein Variometer, von oben bedienbar.

• Net weight (2.2 lb = 1 kg)
• 5.740 kg / 12 lb 10.3 oz (12.643 lb)

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

• Other Models

• Here you find 1 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Derichsweiler, W., Radio Laboratorium: Zürich-Höngg