• Paese
• USA (Stati Uniti d'America)

• Produttore / Marca
• Crosley Radio Corp.; Cincinnati (OH)

• Anno
• 1922

• Categoria
• Radio (o sintonizzatore del dopoguerra WW2)

• Radiomuseum.org ID
• 212724

• Numero di tubi
• 3

• Valvole
• UV200 UV201 UV201

• Principio generale
• A circuiti accordati (amplif. diretta) senza reazione

• N. di circuiti accordati
• 1 Circuiti Mod. Amp. (AM)

• Gamme d'onda
• Solo onde medie (OM).

• Tensioni di funzionamento
• Batterie (di accumulatori e/o a secco) / 6 & 22.5 & 45 Volt

• Altoparlante
• - Questo apparecchio richiede altoparlante/i esterno/i.

• Materiali
• Mobile in legno

• Radiomuseum.org
• Modello: Harko Senior Audion Receiver + Two-Step Amplifier Combination [first version: front switch] - Crosley Radio Corp.;

• Forma
• Soprammobile a cassapanca o cassetta, solitamente con coperchio (NON a leggio)

• Annotazioni
• This is the early version of the "Harko Senior Audion Receiver + Two-Step Amplifier" combination. This combination was at least possible in February 1922 - with the first version of both sets - but we have the official ad for the combination in May 1922 as "Complete Receiving Station" in "Radio Broadcast" Vol. 1, No.1, page 81. The Harko Senior Audion Receiver, a "combined tuner and audion detector" has front switch and lid. In the middle of the two knobs for the two stations, there is a front panel switch to select one or two stages of amplification. Box has overhanging lid. By the way, there are at least three different versions regarding engraving: First version February 1922 with market introduction: straight without special logo: "Crosley two step amplifier" in one line. Second version May 1922 - engraving in two lines. Third version: Later or on the same time it was available without any engraving for the name. In 1923 it was not anymore on the market.
  
  Here is a link to some sources for this model.
  Later models have no such switch on the front and are a bit cheaper. The lid is integrated and without overhang. Those later models could be bought with or without engraving "Crosley Cincinnati TWO STEP AMPLIFIER" (including the logo) - with a price difference of one $.

• Prezzo nel primo anno
• 41.00 $

• Letteratura / Schemi (1)
• Radio Broadcast, May 1922, p. 81

• Letteratura / Schemi (2)
• Radio Digest Illustrated, 1922 Jul. 08, p. 7

• Autore
• Modello inviato da Ernst Erb. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 1791 modelli, di cui 1048 con immagini e 1282 con schemi.
  Elenco delle radio e altri apparecchi della Crosley Radio Corp.; Cincinnati (OH)