37-84B (37-84, 37-84A) Code 122 Late

Philco, Philadelphia Stg. Batt. Co.; USA

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  • Année
  • 1937
  • Catégorie
  • Radio - ou tuner d'après la guerre 1939-45
  • Radiomuseum.org ID
  • 119287

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 Spécifications techniques

  • No. de tubes
  • 4
  • Principe général
  • Super hétérodyne (en général); FI/IF 470 kHz; Super, Réaction non réglable.
  • Circuits accordés
  • 3 Circuits MA (AM)
  • Gammes d'ondes
  • PO uniquement
  • Tension / type courant
  • Alimentation Courant Alternatif (CA) / 115 Volt
  • Haut-parleur
  • HP dynamique à électro-aimant (électrodynamique)
  • Puissance de sortie
  • 0.5 W (qualité inconnue)
  • Matière
  • Boitier en bois
  • De Radiomuseum.org
  • Modèle: 37-84B Code 122 [Late] - Philco, Philadelphia Stg. Batt
  • Forme
  • Modèle de table vertical cathédrale (dessus arrondi)
  • Remarques
  • Philco model 37-84B was the fourth and final generation (following models 80B, 81B, and 84B) of low cost 4-tube cathedrals that used a regenerative combined IF/detector stage in a superheterodyne circuit to maximize sensitivity with very few components.

    Three versions of 37-84B are known: Code 121 uses a chassis with the old style tube lineup of the previous model 84B. The two versions of 37-84B code 122 use more modern octal tubes. While the standard versions of these chassis are for 50-60 Hz AC power, there was also a 37-84A chassis for 25-40 Hz power (probably available for both codes 121 and 122). Note that the -A suffix is a chassis suffix, not to be confused with the main model number -B suffix, which indicates cathedral cabinet.

    The early version of code 122 has four vertical bars through the speaker opening. The late version has simple curvy lattice work in the lower part of the speaker opening. Code 121 has a cabinet similar to the late version of code 122, even though its tube lineup suggests it was chronologically first.
  • Prix de mise sur le marché
  • 20.00 $
  • Source du schéma
  • Rider's Perpetual, Volume 7 = 1936 and before

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