04BR-720A Series A

Montgomery Ward & Co. (Wards, Airline); Chicago, IL

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  • Année
  • 1940
  • Catégorie
  • Radio - ou tuner d'après la guerre 1939-45
  • Radiomuseum.org ID
  • 294270
    • Brand: Airline or Air-Line

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; 2 Etage(s) BF
  • Circuits accordés
  • 6 Circuits MA (AM)
  • Gammes d'ondes
  • PO et OC
  • Tension / type courant
  • Alimentation Courant Alternatif (CA) / 50-60Hz, 105-125 Volt
  • Haut-parleur
  • HP dynamique à aimant permanent + bobine mobile / Ø 6 inch = 15.2 cm
  • Puissance de sortie
  • 3 W (qualité inconnue)
  • Matière
  • Boitier en bois
  • De Radiomuseum.org
  • Modèle: 04BR-720A Series A - Montgomery Ward & Co. Wards,
  • Forme
  • Modèle de table avec boutons poussoirs.
  • Dimensions (LHP)
  • 16.25 x 14.25 x 9 inch / 413 x 362 x 229 mm
  • Remarques

  • The Airline 04BR-720A is an AC operated 7 tube BC and SW band receiver.  The BC band frequency tuning range is 540 to 1550kHz.  The SW band frequency tuning range is 5.7 to 18.0MHz.  Has built-in loop antenna for BC band with provisions for connecting an external antenna.  The SW band requird an external antenna.  Phonograph input jack on rear of chassis. Also has push-pull audio output stage and push-button tuning for 6 radio stations.

    The same schematic and chassis for this model is also used for model 39BR-720A. Note that the first 2 numbers of the model number are the last two digits of the production year reversed.

    This model was built for Montgomery Ward by the Belmont Radio Corp, Chicago, ILL.  The Montgomery Ward catalog order number was 462 A 720.

    NOTE: Starting in 1939, Montgomery Ward began adding the production series in the model number, with the letter "A" in the model number indicating the first production series.  Other service documentation (such as Riders) did not consistantly use the "A" in the model number when referring to the first production series models. However models without the "A" at the end of the model number are the same as the models with the "A".

  • Prix de mise sur le marché
  • 21.95 $
  • Source extérieure
  • Ernst Erb
  • Source du schéma
  • Rider's Perpetual, Volume 11 = ca. 1940 and before
  • Littérature
  • Rider's 11-36
  • Auteur
  • Modèle crée par John Kusching. Voir les propositions de modification pour les contributeurs supplémentaires.

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