F-70

General Electric Co. (GE); Bridgeport CT, Syracuse NY

Données
Forum
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  • Année
  • 1937/1938
  • Catégorie
  • Radio - ou tuner d'après la guerre 1939-45
  • Radiomuseum.org ID
  • 42056
    • Brand: Musaphonic

Cliquez sur la vignette du schéma pour le demander en tant que document gratuit.

 Spécifications techniques

  • No. de tubes
  • 7
  • Principe général
  • Super hétérodyne (en général); FI/IF 465 kHz
  • Gammes d'ondes
  • GO, OC et Police (Maritime)
  • Tension / type courant
  • Alimentation Courant Alternatif (CA) / 115-125 Volt
  • Haut-parleur
  • HP dynamique à électro-aimant (électrodynamique) / Ø 8 inch = 20.3 cm
  • Matière
  • Boitier en bois
  • De Radiomuseum.org
  • Modèle: F-70 - General Electric Co. GE;
  • Forme
  • Modèle de table profil bas (grand modèle).
  • Dimensions (LHP)
  • 20.75 x 10.6875 x 9.4375 inch / 527 x 271 x 240 mm
  • Remarques

  • Tuning Range: 540 to 18,000 kc.

  • Source extérieure
  • Ernst Erb
  • Source du schéma
  • Rider's Perpetual, Volume 8 = 1937 and before
  • Schémathèque (3)
  • General Electric Folder 1000M 9-37 for 1938.

 Collections | Musées | Littérature

Collections

Le modèle F-70 fait partie des collections des membres suivants.

 Forum

Contributions du forum pour ce modèle: General Electric Co.: F-70

Discussions: 1 | Publications: 13

Problems with General Electric F70 (1937) 1 Can somebody help solving this problem? I have restaured this radio (superheterodyne, 7 tubes, 3 bands). It worked well initially and suddenly stopped working. The radio tunes to a - only a few- frequencies bu only a BRRR noise is heard on the loudspeaker. - All the tubes have been checked and seem ok. - Just in case I replaced the converter (6A8). No improvement - Surprisingly, Injecting a signal with a signal generator (RF/AF)(Heathkit RF1) at the antenna, the AF is clearly heard at the loudspeaker. Changing the RF in the generator the radio tunes well at all frequencies in the 3 bands and AF is clearly heard. - IF is 465 kHz. Injecting this frequency at the antenna, AF is heard at the loudspeaker AT ALL positions of the tuning condenser. I do not understand why the radio seems to work well with the signal genarator and not with the external stations. The reception here is strong. Thanks in advance for your help León Shanghai, PR China

Leon Ouziel Canals, 01.May.08

Weitere Posts (13) zu diesem Thema.