• Pays
• Etats-Unis

• Fabricant / Marque
• Philco, Philadelphia Stg. Batt. Co.; USA

• Année
• 1934/1935

• Catégorie
• Radio - ou tuner d'après la guerre 1939-45

• Radiomuseum.org ID
• 50479

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

• No. de tubes
• 10

• Lampes / Tubes
• 78 6A7 78 78 37 75 42 42 42 5Z3

• Principe général
• Super hétérodyne avec étage HF; FI/IF 260 kHz

• Gammes d'ondes
• PO et OC

• Tension / type courant
• Alimentation Courant Alternatif (CA) / 115 Volt

• Haut-parleur
• HP dynamique à électro-aimant (électrodynamique)

• Puissance de sortie
• 15 W (qualité inconnue)

• Matière
• Boitier en bois

• De Radiomuseum.org
• Modèle: 201X - Philco, Philadelphia Stg. Batt

• Forme
• Console de forme générique

• Dimensions (LHP)
• 26 x 41.5 x 13 inch / 660 x 1054 x 330 mm

• Remarques
• The Philco model 201X (1934-35) was the second high fidelity model introduced by Philco. The ten-tube two-band (BC + SW 4.2-12 MHz) chassis has variable IF bandwidth to trade off selectivity versus fidelity, controlled by a three-gang potentiometer to adjust the Q of two of the three IF transformers and the gain of both IF stages. Unlike most radios of its day, which were restricted to about 4 kHz of audio bandwidth, the 201X has 7.5 kHz of bandwidth at its maximum fidelity setting. The circuit includes a 10 kHz audio filter to remove the high pitched heterodyne that could be caused by the carrier of an adjacent channel. In addition to the fidelity-selectivity control, which functions somewhat like a treble control, there is a bass compensation switch on the side of the cabinet. The chassis has a shadow meter (tuning aid) with its own dedicated control tube (unlike other Philco designs where the shadow meter simply indicates B+ current to the RF and/or IF stages). The push-pull output stage, with one 42 driver tube and two 42 output tubes, delivers 15 watts of undistorted output.
  
  The cabinet is a floor-type console with inclined sounding board.
  
  Philco had introduced another high fidelity model earlier in 1934 - the 200X. It was similar to model 201X but covered only the broadcast band.
  
  A related model is the 509X super deluxe high fidelity radio-phonograph which used the 201 chassis.

• Prix de mise sur le marché
• 250.00 $

• Source extérieure
• Ernst Erb

• Source du schéma
• Rider's Perpetual, Volume 6 = 1935 and before

• Littérature
• Philco Radio 1928-1942

• Schémathèque (1)
• Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data

• D'autres Modèles

• Vous pourrez trouver sous ce lien 4086 modèles d'appareils, 2222 avec des images et 3734 avec des schémas.
  Tous les appareils de Philco, Philadelphia Stg. Batt. Co.; USA