• Year
  • 1956
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 82003
    • alternative name: Grundig Portugal || Grundig USA / Lextronix

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

 Technical Specifications

  • Number of Tubes
  • 9
  • Main principle
  • Superheterodyne (common)
  • Tuned circuits
  • 9 AM circuit(s)     13 FM circuit(s)
  • Wave bands
  • Broadcast, Long Wave, Short Wave plus FM or UHF.
  • Details
  • Radio Control (+Remote Wire etc)
  • Power type and voltage
  • Alternating Current supply (AC) / 110-220 Volt
  • Loudspeaker
  • 5 Loudspeakers
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 4055/56 - Grundig Radio-Vertrieb, RVF,
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 706 x 444 x 300 mm / 27.8 x 17.5 x 11.8 inch
  • Notes
  • 2 Tasten für UKW, "Fern-Dirigent".
    Drehbare Ferritantenne, Gegentakt-Endstufe.

    Siehe auch Vorgänger Grundig 4055W/3D (noch ohne Anschluss f. Fern-Dirigent) und 4055WF/3D.

    Es existierte auch eine Ausührung 4055W/56/S für den Export nach Schweden.

  • Net weight (2.2 lb = 1 kg)
  • 17.6 kg / 38 lb 12.3 oz (38.767 lb)
  • Literature/Schematics (1)
  • -- Original-techn. papers.

 Collections | Museums | Literature


The model is part of the collections of the following members.


Forum contributions about this model: Grundig Radio-: 4055/56

Threads: 1 | Posts: 2

I am repairing a Grundig 4055W/3D-56 and the MW/LW/SW is working fine, but only the FM is not working. I have replaced the 10 uF elco in the FM detector, but I hear nothing than a little bit noise (with the volume at maximum level). I exchanged the EABC80 and ECC85 and doesn't matter.

When I use a small transistor FM radio to test the local oscillator of the Grundig radio and I tune this at 100.7MHz and I tune the Grundig 4055 to 90 MHz I don't hear nothing on the transistorradio. Even when I turn the dialknob from the beginning to the end of the Grundig, I don' t hear a  signal on my transistorradio.

The voltage on pin1 (anode of first triode) is 145 V, the voltage on pin 6 (anode of second triode) is about 132 V.

Does somebody know if there is a technical explanation of the FM tuner of this radio? What could be the reason that the oscillator is not working.

I use the output of the FM tuner of my Telefunken Opus 7 radio and connect it to the first grid of the Ech81 tube of the 4055 radio. Now I have a good sound, so the mf amplifiers and FM detector works fine and the problem is in the FM tuner of the 4055.


Martin Panhuis, 04.Dec.13

Weitere Posts (2) zu diesem Thema.