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C4100 Automatic

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C4100 Automatic; Grundig Radio- (ID = 2233148) Radio
Grundig Radio-: C4100 Automatic [Radio] ID = 2233148 1024x768
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For model C4100 Automatic, Grundig (Radio-Vertrieb, RVF, Radiowerke)
Country:  Germany
Manufacturer / Brand:  Grundig (Radio-Vertrieb, RVF, Radiowerke)
alternative name
Grundig Portugal || Grundig USA / Lextronix
Year: 1974–1978 Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 21:
Main principle Superheterodyne (common); ZF/IF 460/10700 kHz
Tuned circuits 6 AM circuit(s)     9 FM circuit(s)
Wave bands Broadcast, Long Wave, Short Wave plus FM or UHF.
Details Cassette-Recorder or -Player
Power type and voltage Line / Batteries (any type) / 110-127; 220-240 / 6×1,5 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
Power out 2 W (undistorted)
from Model: C4100 Automatic - Grundig Radio-Vertrieb, RVF,
Material Modern plastics (no Bakelite or Catalin)
Shape Portable set > 8 inch (also usable without mains)
Dimensions (WHD) 345 x 205 x 85 mm / 13.6 x 8.1 x 3.3 inch

Grundig Radio-Recorder C4100 Automatic.
Ausgangsleistung bei Netzbetrieb: 3 W (Musik). Ovallautsprecher (90 x 140 mm). Batterie- / Netz-Umschaltung an der Rückseite. 8-pol DIN-Buchse für Anschluß von ext. Mikrofon oder Tonband. Eingebautes Electretmikrofon. Instrument für Batterie-Verbrauchsanzeige. Kopfhöreranschluß (Klinke 3,5 mm). Teleskopantenne (90 cm). Ferritantenne (16 cm).

Ausführung: schwarz. Verkauf über die Weltfunk anlässlich der Funkausstellung 1975.

Der C4100 hat die gleichen Gehäuse-Abmessungen, den gleichen Tragebügel und die gleiche Antenne wie der C4500 und der C4800. C4100 und C4500 sind auch von der Technik her identisch (gleiche Bedienungsanleitung), sie unterscheiden sich nur durch Äußerlichkeiten.

Net weight (2.2 lb = 1 kg) 3.5 kg / 7 lb 11.3 oz (7.709 lb)
External source of data Erb
Source of data Katalog RFP 1974
Literature/Schematics (1) -- Original-techn. papers.

All listed radios etc. from Grundig (Radio-Vertrieb, RVF, Radiowerke)
Here you find 6064 models, 5290 with images and 4093 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Grundig Radio-: C4100 Automatic
Threads: 2 | Posts: 4
Hits: 287     Replies: 2
Grundig C4100 Tape, Radio issues
Uday Kalburgi


Greetings from Bangalore, India.

I am trying to restore solid state Grundig C4100 Tape/Radio. The power section looks to be out. Nothing is happening on any front. mains to Battery switch is also faulty, loks like capacitors are to be replaced.

To access the capacitors, I have to remove dial plate and all the holding plastic pins are brittle. the tuning capacitor wheel is also broken and earlier someone has repaired it. 

Need advise, should I leave it as it is or taking out everything, breaking the plastic, look, tuning wheel repair, will become repair , which I hate to do. These parts are available any where? 

Looking for advise

Warm Regards

Uday K



Marc Gianella

Dear Mr. Kalburgi

I can't give you an advice because I don't know the value of such a radio in India.

As I own such a model in a relatively bad state but complete, I can offer you the replacement parts you will need.
With my radio, the mains and the audio amplifier seem to be working. The radio doesn't, perhaps because the switches are corroded. Only part missing is the outermost segment of the telescopic antenna.

I'd give you the whole radio for free, but the postage to India is way too much. Sending some parts up to a total weight of 500g is reasonable.
So the mentioned Plug, the mains/battery switch, the tuning cap wheel, every mechanical part you might need is here in functional state.

Please let me know if and what parts you need.

Kind regards and greatings from Switzerland


Uday Kalburgi

Good Eveing Marc,

So nice of you !! Thank you so much !!. 

Giving is something very noble action.  I sincerely appriciate your help.

I would like to pickup whole set and will pay postage and any other additional expenses. 

We have to wait till air cargo/post  to start. My Austrilian Post is also stuck !!. Hopefully Covid goes off soon.

I will be in touch with you Sir !!

Warm Regards

Uday K

Hits: 940     Replies: 0
grundig: Ausbau des Rundfunkteils
Ottmar Lauth

Der Ausbau des Rundfunkteils bzw. dessen Platine ist absolut kompliziert :

Zuerst muß man den Batteriefachdeckel und den Deckel des Netzkabelfachs entfernen.

Dann muß man die drei Schrauben an der Unterseite abschrauben und  den Abstimmknopf abziehen.

Dann muß die Rückwand nach oben geklappt werden und vom Vorderteil getrennt werden.

Jetzt müssen die Steckverbindungen zum Lautsprecher, zum Batteriefach, zur Kassettenplatine und zum Netztrafo abgezogen werden und die Platine von der Rückwand gelöst werden.

Um an beide Seiten der Platine zu kommen, muß nun noch die Skala entfernt werden : Zuerst ist es erforderlich, den roten Stöpsel abzuziehen, der die Skalenseilrolle mit der Drehko - Achse verbindet.

Dann löst man die Plastik - Klammer links und schiebt die Skala nach rechts ab.



Grundig Radio-: C4100 Automatic
End of forum contributions about this model