• Country
• Italy

• Manufacturer / Brand
• Unda Radio; Como, Dobbiaco

• Year
• 1939–1941

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 99504

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 7

• Valves / Tubes
• EF8 6L7G 6C5G EBF2 6Q7G 6L6G 80

• Main principle
• Superhet with RF-stage; ZF/IF 450 kHz

• Tuned circuits
• 9 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and more than two Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 100-270 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 32 cm = 12.6 inch

• Power out
• 7 W (max.)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Sex Unda 761 - Unda Radio; Como, Dobbiaco

• Shape
• Tablemodel, low profile (big size).

• Notes

• Sensibilità in onde Lunghe 10 µV; in onde Medie 5 µV; in onde Corte inferiore a 1 µV.
  Onde Lunghe 150 - 130 kHz. Onde Medie 500 - 1560 kHz. Corte I 12 - 18,5 m; Corte II 18 - 26,5 m; Corte III 26 - 38 m; Corte IV 37 - 54 m.
  Range di bassa frequenza da 40 a 6.000 Hz.
  Pulsantiera per la selezione automatica di 10 emittenti.
  Controllo di tono. Ingresso per giradischi. Indicatore di sintonia a proiezione d'ombra.

• Price in first year of sale
• 3,600.00 ITL

• Source of data
• Guida Pratica Antique Radio II (2000)

• Literature/Schematics (1)
• -- Original-techn. papers. (D.E. Ravalico: Servizio Radiotecnico vol. II. Radioriparazioni. 8^ Edizione. Hoepli, Milano, 1952.)

• Literature/Schematics (2)
• Il Radio Libro (E.D. Ravalico) Edizioni Hoepli (VI edizione 1942)

• Literature/Schematics (3)
• L'Antenna la Radio numero 22, novembre 1939

• Author
• Model page created by Alessandro De Poi. See "Data change" for further contributors.

• Other Models

• Here you find 242 models, 160 with images and 177 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unda Radio; Como, Dobbiaco