• Land
• USA

• Hersteller / Marke
• Philco, Philadelphia Stg. Batt. Co.; USA

• Jahr
• 1934/1935

• Kategorie
• Rundfunkempfänger (Radio - oder Tuner nach WW2)

• Radiomuseum.org ID
• 51088

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• Anzahl Röhren
• 10

• Röhren
• 78 6A7 78 78 37 75 42 42 42 5Z3

• Hauptprinzip
• Super mit HF-Vorstufe; ZF/IF 260 kHz

• Wellenbereiche
• Mittelwelle und Kurzwelle.

• Spezialitäten
• Plattenspieler (kein -Wechsler)

• Betriebsart / Volt
• Wechselstromspeisung / 115 Volt

• Lautsprecher
• Dynamischer LS, mit Erregerspule (elektrodynamisch)

• Belastbarkeit / Leistung
• 15 W (Qualität unbekannt)

• Material
• Gerät mit Holzgehäuse

• von Radiomuseum.org
• Modell: 509X Radio-Phonograph - Philco, Philadelphia Stg. Batt

• Form
• Standgerät: allgemein.

• Bemerkung
• The Philco model 509X is a limited edition super deluxe high fidelity radio-phonograph using the same ten-tube two-band chassis as the 201X high fidelity radio. Only 500 units were built, and at a price of $600, were affordable only to the very rich.
  
  Like the model 201X, the 509X covers the BC and SW (4.2-12 MHz) bands and 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 509X, like 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. 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.
  
  

• Originalpreis
• 600.00 $

• Datenherkunft extern
• Ernst Erb

• Datenherkunft
• Philco Radio 1928-1942

• Schaltungsnachweis
• Rider's Perpetual, Volume 6 = 1935 and before

• Literaturnachweis
• Philco Radio 1928-1942

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

• Weitere Modelle

• Hier finden Sie 4041 Modelle, davon 2218 mit Bildern und 3690 mit Schaltbildern.
  Alle gelisteten Radios usw. von Philco, Philadelphia Stg. Batt. Co.; USA