Super 2417VK

Telefunken, Helsinki

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  • Année
  • 1949 ?
  • Catégorie
  • Radio - ou tuner d'après la guerre 1939-45
  • Radiomuseum.org ID
  • 98083

 Spécifications techniques

  • No. de tubes
  • 6
  • Principe général
  • Super hétérodyne (en général)
  • Circuits accordés
  • 5 Circuits MA (AM)
  • Gammes d'ondes
  • PO, GO et OC
  • Tension / type courant
  • Alimentation Courant Alternatif (CA) / 110-240 Volt
  • Haut-parleur
  • HP dynamique à aimant permanent + bobine mobile / Ø 18 cm = 7.1 inch
  • Matière
  • Boitier en bois
  • De Radiomuseum.org
  • Modèle: Super 2417VK - Telefunken, Helsinki
  • Forme
  • Modèle de table profil bas (grand modèle).
  • Dimensions (LHP)
  • 530 x 363 x 262 mm / 20.9 x 14.3 x 10.3 inch
  • Poids net
  • 11 kg / 24 lb 3.7 oz (24.229 lb)
  • Source
  • - - Data from my own collection
  • Auteur
  • Modèle crée par Eero Ukkola. Voir les propositions de modification pour les contributeurs supplémentaires.

 Collections | Musées | Littérature

Collections

Le modèle Super fait partie des collections des membres suivants.

 Forum

Contributions du forum pour ce modèle: Telefunken, Helsinki: Super 2417VK

Discussions: 2 | Publications: 2

A couple of nights ago replaced some of the paper caps by Italian-made ICEL capacitors I bought from a local vendor here in Helsinki. Can't stop wondering at how much smaller the capacitors are nowadays than they were 60+ years ago.

Today I received a nice pair of EBL21 from a friendly seller in the Netherlands (one tube will go to the set of spare parts for this radio). Replaced the AF output tube, and got more signs of life. The AF responds nicely, the volume control is apparently good. Judging by the noice coming from the speaker, I will have to thoroughly clean the sockets, though. Other than that, the project seems to be going well.

Dimitri Vorobiev, 01.Mar.12

Weitere Posts (1) zu diesem Thema.

I got this radio from a flea market in Porvoo where it was sitting in a corner with a really attractive price tag. Previous owner wrote on the price tag that the light was working, and there was some noise coming out. Apart from missing tuning and band switching knobs, there were no apparent problems with this radio, so I decided to take it home for a restoration project.

The condition of the internals was surprisingly good. There was very little dust (apparently, it comes from a clean home). Mechanically, the chassis looks intact. There are traces of previous soldering work in the circuits, and I should say that whoever did that work did it well.

First, I took the chassis out of the wooden cabinet, unmounted the dial glass, and cleaned up the white cardboard behind the latter. Also, both dial lapms were blown, and I had to replace them. These common 6.3V E10-based lamps, and I had such in my stash. Paint on the dial glass is fragile and started to detach and fall off in tiny pieces.

The output tube (EBL21) is ruined, but still amplifies. My theory is that a leaking coupling capacitor killed it. The structures inside the tube are physically bent, and there are loose flakes of what seems to be burnt getter inside the bulb. Still, the AF part was somehow working, as I heard hum when touching the grammophone input.

The magic eye was barely visible, apparently very little emission left in it. EM4 are expensive, so I am thinking of replacing it with Soviet 6E5C at some point.

Yesterday I started recapping the radio. I plan to replace the electrolytics as well as paper capacitors first, change the resistor in the B+ filter circuit, then try the radio with NOS output and AF preamp tubes.  When the AF part is OK, it'll be time for the RF part. I also plan to use this forum for my notes on restoration.

Dimitri Vorobiev, 15.Feb.12

Weitere Posts (1) zu diesem Thema.