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90A Baby Grand Middle

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90A Baby Grand; Philco, Philadelphia (ID = 509085) Radio
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90A Baby Grand; Philco, Philadelphia (ID = 377758) Radio
Philco, Philadelphia: 90A Baby Grand [Radio] ID = 377758 372x428
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Für Modell 90A Baby Grand Middle, Philco, Philadelphia Stg. Batt. Co.; USA
 
Land:  USA
Hersteller / Marke:  Philco, Philadelphia Stg. Batt. Co.; USA
Jahr: 1931 perfect model Kategorie: Rundfunkempfänger (Radio - oder Tuner nach WW2)
Röhren 9: 24 24 27 24 27 27 27 47 80
Hauptprinzip Super mit HF-Vorstufe; ZF/IF 175 kHz
Anzahl Kreise 7 Kreis(e) AM
Wellenbereiche Mittelwelle, keine anderen.
Spezialitäten
Betriebsart / Volt Wechselstromspeisung / 25 to 60 cycles, 115 Volt
Lautsprecher Dynamischer LS, mit Erregerspule (elektrodynamisch)
Belastbarkeit/Leistung
von Radiomuseum.org Modell: 90A Baby Grand [Middle] - Philco, Philadelphia Stg. Batt
Material Gerät mit Holzgehäuse
Form Tischgerät, Kathedralenform (Hochformat, bogig bis spitzbogig, nicht nur runde Ecken).
Abmessungen (BHT) 18 x 19 x 12 inch / 457 x 483 x 305 mm
Bemerkung

Models 90 and 90A were available in a cathedral, a lowboy, and a highboy cabinet. The chassis was made in three versions - an early model 90 and 90A with two 45 output tubes in push-pull, a middle version with one 47 output tube, and a late version with two 47 output tubes. Model 90 is for 115 VAC 50-60 Hz; model 90A is for 115 VAC 25-60 Hz.

The models 90 and 90A "early" and "middle" have a 4-gang tuning condenser plus 3 tuned IF circuit - both with IF 175 (Rider's change note 8-3). The version "middle", which are above serial number 237,001, of the model 90 and 90A has tubes: 24 RF, 27 osc, 24 1st det., 24 IF, 27 2nd det. rect., 27 det. amp., 27 1st AF amp, 47 output and 80 rectifier. The "late" model 90 and 90A again have push-pull output but with 2 x 47 tubes. See Rider's Philco 3-35 for IF 260 kHz. Applied on models serial B-32001 to B-35000 and above B-53100. They have a 3-gang tuning condenser and only 6 tuned circuits. The same differences can be found for all cabinets, both 90 and 90A: Baby Grand (Cathedral), Lowboy and Highboy (with a stretcher).

The cathedral cabinet is the classic design by Edward L. Coombs, and is similar to the cathedral versions of model 21, 35, 46, and 70.
 

Originalpreis 69.00 $
Datenherkunft extern Ernst Erb
Datenherkunft Radio Collector`s Guide 1921-1932
Schaltungsnachweis Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)
Literaturnachweis The Radio Collector's Directory and Price Guide 1921 - 1965
Literatur/Schema (1) Philco Radio 1928-1942 (Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data)
Literatur/Schema (3) Philco Folder 2674.


Alle gelisteten Radios usw. von Philco, Philadelphia Stg. Batt. Co.; USA
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