• Paese
• USA (Stati Uniti d'America)

• Produttore / Marca
• CBS-Columbia Inc.; New York, NY

• Anno
• 1959 ?

• Categoria
• Radio (o sintonizzatore del dopoguerra WW2)

• Radiomuseum.org ID
• 126967

• • alternative name: CBS Electronics || Columbia Phonographs || Columbia Records

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

• Numero di transistor
• 4

• Semiconduttori
• 2S52 or. 2N412 2S53 or. 2N410 2S45 or. 2N410 2S56 or. 2N408 1N60

• Principio generale
• Supereterodina (in generale); ZF/IF 455 kHz; 2 Stadi BF; Reflex

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

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

• Tensioni di funzionamento
• Batterie a secco / 1 x 9 Volt

• Altoparlante
• AP magnetodinamico (magnete permanente e bobina mobile) / Ø 2.25 inch = 5.7 cm

• Materiali
• Plastica (non bachelite o catalina)

• Radiomuseum.org
• Modello: 4 Transistor 400G Label code PR-1018 - CBS-Columbia Inc.; New York,

• Forma
• Tascabile (portatile molto piccola), < 20 cm

• Dimensioni (LxAxP)
• 2.5 x 4 x 1.25 inch / 64 x 102 x 32 mm

• Annotazioni

• The Zephyr Transistor Z and the Transistor 4T models have non-vented backs, TRANSISTOR on the escutcheon, and a label code PR-793. The only difference between these two models is the round badge: Z or 4T. There is no model number on the models, so the badge is used for part of the model name.

  Later similar versions of the Columbia 4 Transistor 400B, 4 Transistor 400G, and
  4 Transistor 400R have vented backs (probably to correct a heating issue of the germanium transistors),  4 TRANSISTOR on the escutcheon, a label code PR-1018, and a round badge Columbia above a music note. 

  The base model number 400 listed on period ads, radio instructions, and Beitman's is generic only and represents all 400 models. Actual radios sold had a cabinet color letter, B (black), G (gray), or R (red) added to 400 and was only printed on the box, not on the radio.

  SAMS Photofact, date 11-60, set 507, folder 6 features the CBS Columbia models 400B, 400G, and 400R as the same schematic. The only difference is the three color cabinet P/Ns, as listed in the Parts List.

  The 2nd IF transistor is reflexed as the 1st AF stage.

  Made in Japan

• Peso netto
• 0 lb 8 oz (0.5 lb) / 0.227 kg

• Prezzo nel primo anno
• 29.95 USD

• Riferimenti schemi
• Beitman Radio Diagrams Vol. 20, 1960

• Bibliografia
• Collector's Guide To TrR1 Bunis trans.94 (1996, page 63)

• Letteratura / Schemi (1)
• Photofact Folder, Howard W. SAMS (Set 507, Folder 6, dated 11-1960)

• Letteratura / Schemi (2)
• Photofact TSM Transistor Radio Series SAMS (TSM-11, April 1962, pages 39 - 42)

• Letteratura / Schemi (3)
• -- Original prospect or advert (The Atchison [KS] Daily Globe, Oct. 4, 1959, page 7 ad "$29.95")

• Letteratura / Schemi (4)
• -- Original prospect or advert (The Akron Ohio Beacon Journal, Dec. 11, 1959, page 5 ad)

• Autore
• Modello inviato da un iscritto da A. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 423 modelli, di cui 246 con immagini e 381 con schemi.
  Elenco delle radio e altri apparecchi della CBS-Columbia Inc.; New York, NY