• Country
• Switzerland

• Manufacturer / Brand
• Sondyna AG; Zürich-Effretikon

• Year
• 1940–1942

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 13586

• Number of Tubes
• 7

• Valves / Tubes
• EF13 ECH11 EBF11 EF11 EM4 EL6 AZ4

• Main principle
• Superhet with RF-stage; ZF/IF 472 kHz

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110-240 Volt

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Stradivari 1940 - Sondyna AG; Zürich-Effretikon

• Notes

• Wie Stradivari 40 EF70 aber anderes Gehäuse.

• Price in first year of sale
• 575.00 SFr

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Picture reference
• Das Modell ist im «Radiokatalog» (Erb) abgebildet.

• Other Models

• Here you find 177 models, 112 with images and 115 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sondyna AG; Zürich-Effretikon