• Country
• Germany

• Manufacturer / Brand
• Jotha-Radio, El.-App.-Fabrik Jochen Hüngerle KG (Huengerle); Königsfeld/Schww.

• Year
• 1952 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 255710

• • alternative name: Elektro-Apparate-Fabrik
  • Brand: EAF

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

• Number of Tubes
• 5

• Valves / Tubes
• ECH42 EF41 EAF42 EL41 EM11

• Number of Transistors

• Semiconductors
• B250C85

• Main principle
• Superheterodyne (common); ZF/IF 468/10700 kHz; Reflex

• Tuned circuits
• 6 AM circuit(s)     5 FM circuit(s)

• Wave bands
• Broadcast, Long Wave, Short Wave plus FM or UHF.

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 220; 240 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: Mercedes 225W 6552 UW 4 - Jotha-Radio, El.-App.-Fabrik

• Notes

• Die 1. UKW-ZF-Stufe (EF41) arbeitet in Reflexschaltung als NF-Vorstufe.
  Flankendemodulator für UKW.

• Mentioned in
• Lange, Schaltungen der Funkindustrie (Band 6, Seiten 48)

• Author
• Model page created by a member from D. See "Data change" for further contributors.

• Other Models

• Here you find 58 models, 46 with images and 36 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Jotha-Radio, El.-App.-Fabrik Jochen Hüngerle KG (Huengerle); Königsfeld/Schww.