Model: TFM-151 (TFM151)



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TFM-151 (TFM151)
Country: Japan Manufacturer/Brand: Sony; Tokyo
Year: 1958 Type: Radio or TunerBroadcast receiver (Radio).
Im Gegensatz zu Radioempfängern für kommerzielle und/oder militärische Zwecke und den frühen Empfängern für Morsezwecke nennen wir hier Radio bzw. Rundfunkempfänger. Aber: Gemäss internationaler Sprachregelung führt der Radiokatalog Band 1 alle Empfänger mit aktiven Bauteilen als RADIO. Wir unterscheiden hier ebenfalls nicht, ob mit Röhren bestückt, hybrid, mit Transistoren oder/und ICs. Mod.-ID = 103587 previous | Result List | next | New search for Radios etc. Schematics etc.: 0 (for members) Principle Super-Heterodyne (Super in general)Superhet - normally without a preamplification stage (as far as known). Please use «To add informations to model» if you know more! Thanks.
Récepteur TSF superhétérodyne. Normalement sans préamplification de HF.
Superhet ohne Vorstufe.
Nicht immer war bei der Erfassung klar, ob der Empfänger eine Vorstufe aufweist oder nicht. Im Zweifelsfall kam das Gerät in diese Kategorie.
Wave bands Broadcast (BC) and FM.Mittelwellen und UKW (FM).
Power type and voltage Dry Batteries / 4 × 1,5 VoltDry battery supply. Alimentation de batterie
Batteriespeisung mit Trockenelementen.
Das Gerät erhält seine Betriebsspannungen von nicht aufladbaren Batterien (Primärzellen).
Solche Geräte wurden auch mit sogenannten Netzanoden gespiesen, die zumindest die Anodenspannung lieferten, in manchen Fällen auch Gittervorspannungen und teilweise auch Heizspannungen.
Loudspeaker/pwr.out Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - ellipticalPermanent magnetic dynamic loudspeaker (moving-coil) in elliptical form - without field excitation coil. Haut parleur elliptique avec système dynamique (sans bobine d`excitation).
Permanent-dynamischer Ovallautsprecher (elliptisch, ohne Erregerspule für das Magnetfeld).
www.radiomuseum.org Model: TFM-151 (TFM151) Material Modern plastics (no Bakelite or Catalin)Plastic case - not bakelite.
Caisse en plastique - pas en bekelite!
Moderner Kunststoff im Gegensatz zu Materialien wie Bakelit, Philit etc.
Shape Portable, e.g. Portable Radio (with or without mains > 8 inch).
Dimensions (WHD) 232 x 193 x 78 mm / 9.1 x 7.6 x 3.1 inch
Transistors 15
Notes Sony TFM-151 is Sony's first AM/FM full transistor radio and has been built only in a quantity of (well) over thousand pieces. 8 transistors blus 4 diodes and a varisotr were used for FM and the set reads "FM/AM Fifteen Transistor", not AM/FM, emphasing the new possibility, FM with transistors. Sony exhibited the TFM-151 at the 7th annual Audio Fair in Tokyo in October 1958 and then released it for sale as an export-only model the following month. Most probably that meant USA only. We have some text that suggests that Südfunk in Germany was also building an AM-FM-Superhet as full transistor radio and we are in the process of checking the dates. The problem in 1958 was to have transistors which work on this (then) high frequency. The TFM-151 has an oval speaker of 4" x 6" like TR-74 and TR-741. The FM band is from 88 to 108 mc.

If you have a Sony TFM-151 then you have to take care of it because the plastic is not strong enough to support the weight of the radio and during the years went into a stage where it tends to break very easily. The chassis was marked 010-6 and was revised to the 010-6A version by the time production reached serial number 1439.
Price in first year of sale 149 USD
Collectors prices 1 Collector price (for members)
Source of data -- Collector info (Sammler)
Literature/Schematics Photofact Folders, SamsPhotofact Folders, Howard W. Sams. Normally referenced in schematics but when there is more ... (select the last field and enter the number in the free field). (Set 483 Folder 15 5-1960)
   
This model was suggested by Wolfgang Scheida.
 
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TFM-151 (TFM151) (Sony; Tokyo)

 
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