Ekeradio Pocket F-M set and tuner

Ekeradio Electronic Developments; Pasadena CA

Dati
Forum
Immagini
Collezioni

  • Anno
  • 1951–1955
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 322332

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 Specifiche tecniche

  • Numero di tubi
  • 1
  • Principio generale
  • A circuiti accordati (TRF o amplif. diretta in generale)
  • Gamme d'onda
  • Onde medie (OM) e tropicali/polizia (150-200m).
  • Tensioni di funzionamento
  • Batterie a secco / 1,5 & 30 Volt
  • Altoparlante
  • - solo per cuffie o auricolari
  • Materiali
  • Plastica (non bachelite o catalina)
  • Radiomuseum.org
  • Modello: Ekeradio Pocket F-M set and tuner - Ekeradio Electronic
  • Forma
  • Tascabile (portatile molto piccola), < 20 cm
  • Dimensioni (LxAxP)
  • 4.5 x 2.75 x 1 inch / 114 x 70 x 25 mm
  • Annotazioni

  • At least in 1954 Ekeradio offered a "beginners kit" transistor radio, a two band 8-oz. battery, transistorized Ekeradio, a transistorized custom F-M Ekeradio and a Transistorized "All wave Band Radio".

    This Pocket F-M set and tuner:
    It uses a subminiature tube only. Receives a range of 87.6 to 108.7 Mc, then including the channel 5 TV sound.

    The drawing of this Ekeradio Pocket F-M set and tuner is October 5, 1951. The "Thimble Set" was sold as a kit but Ekeradio wrote "there will be no kits or plans for this set". The designer was Glen Ecker, the owner of Ekeradio. 

    Offered was a "special High Frequency FM tube" called "Ekeradio" either for 60 (for $ 5.95) or for 30 (for $ 6.50) plate voltage. The midget tuning condenser U.H.F is for 2.7 to 15 Mmf. An Eveready "B" battery No. 413E or 507E for 30 volts (two in series for 60 volts) had to be carried outside the set. An "A" battery No. 935, size "C" for 1.5 volts was placed inside the set. The RF coil is winded with a 14 inches #26 enameled wire and soldered after 3 turns of the FM-tank coil.

    A plan was included to build a two-stage amplifier with the popular 722 and 107 transistor. We have to know that at that time FM was not reachable by transistors, at the beginning not even short wave.

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

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