847S "Facto Meter"

Bendix Radio Division; Baltimore, MD

Dati
Forum
Immagini
Collezioni

  • Anno
  • 1947
  • Categoria
  • Strumento da laboratorio
  • Radiomuseum.org ID
  • 136839

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 Specifiche tecniche

  • Numero di tubi
  • 8
  • Principio generale
  • Supereterodina con stadio RF; ZF/IF 455/10700 kHz
  • Gamme d'onda
  • Onde medie (OM) e MF (FM).
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA) / 110 - 120 Volt
  • Altoparlante
  • AP magnetodinamico ellittico (magnete permanente e bobina mobile).
  • Materiali
  • Mobile di metallo
  • Radiomuseum.org
  • Modello: 847S "Facto Meter" - Bendix Radio Division;
  • Forma
  • Soprammobile con qualsiasi forma (non saputo).
  • Annotazioni
  • Bendix 847S "Facto Meter" is an AC operated FM-AM Superheterodyne Receiver (Field Test) with Telescopic Antenna. Built-in field strenght instrument.
    6" x 9" PM elliptical speaker.
  • Autore
  • Modello inviato da Egon Penker. Utilizzare "Proponi modifica" per inviare ulteriori dati.

 Collezioni | Musei | Letteratura

Collezioni

Il modello 847S "Facto Meter" fa parte delle collezioni dei seguenti membri.

Musei

Il modello 847S "Facto Meter" può essere visto nei seguenti musei.

 Forum

Discussioni nel forum su questo modello: Bendix Radio: 847S "Facto Meter"

Argomenti: 1 | Articoli: 1

Hi All,

I was restoring a "tubeless" Bendix 847S Facto Meter and discovered an undocumented manufacturing change. The FM RF tube was not a 7-pin device (6AG5 as listed in every piece of documentation I could find) it was a 9-pin socket which isn't documented on the tube chart, schematic or any other place I can find. I thought about replacing the socket but of course it's buried under the gang switch and almost impossible to inspect how it's connected not to mention how it's connected.

I asked the good people on the Antique Radio Forum and Jim Mueller responded, "It's probably a production change for the tube that didn't make it into the labeling. Since it is the RF amplifier, it might be a dual triode like a 6BQ7 in a cascode circuit."  So I check everything I could get to and it appeared to be at least wired for the 6BQ7 so I gave it a try.  I am happy to report that it works great.  My thanks to Mr. Mueller and I hope this proves helpful for others.

Cheers, Scott

  

James Massey, 19.Dec.21

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