• Country
• Germany

• Manufacturer / Brand
• Joba-Radio; St. Ingbert (Saarland)

• Year
• 1949

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 26832

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

• Number of Tubes
• 6

• Valves / Tubes
• ECH3 EBF2 EF9 EL3N EM4 1883

• Main principle
• Superheterodyne (common); ZF/IF 475 kHz

• Tuned circuits
• 6 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 120; 220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 21 cm = 8.3 inch

• Power out
• 4 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Principal I - Joba-Radio; St. Ingbert

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

• Dimensions (WHD)
• 510 x 315 x 240 mm / 20.1 x 12.4 x 9.4 inch

• Notes

• Rote Röhren; Chassis aus Hartfaser. Anodenspannung aus Netz mit Spartrafo.

  Die Zeitschrift "Rundfunk und Elektrotechnik" Ausgabe 5/49 schrieb das Modell mit "z" (Prinzipal) - der Name auf Rückwand, Skala und Schaltplan ist aber mit "c" geschrieben (Principal).

• Net weight (2.2 lb = 1 kg)
• 8 kg / 17 lb 9.9 oz (17.621 lb)

• Price in first year of sale
• 19,900.00 FRF

• Source of data
• -- Original prospect or advert / Radiokatalog Band 2, Ernst Erb

• Mentioned in
• - - Manufacturers Literature

• Author
• Model page created by Franz-Josef Haffner. See "Data change" for further contributors.

• Other Models

• Here you find 12 models, 11 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Joba-Radio; St. Ingbert (Saarland)