• Anno
  • 1951
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 97375

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

 Specifiche tecniche

  • Numero di tubi
  • 3
  • Principio generale
  • A reazione (con rigenerazione)
  • N. di circuiti accordati
  • 1 Circuiti Mod. Amp. (AM)
  • Gamme d'onda
  • Gamme d'onda nelle note.
  • Tensioni di funzionamento
  • Alimentazione universale (doppia: CC/CA) / 105-125 Volt
  • Altoparlante
  • - Per cuffie o amplificatori esterni
  • Materiali
  • Mobile di metallo
  • Radiomuseum.org
  • Modello: T3BK - Meissner Mfg. Div., Maguire
  • Forma
  • Chassis o in scatola da montaggio
  • Dimensioni (LxAxP)
  • 7.75 x 4.25 x 4.5 inch / 197 x 108 x 114 mm
  • Annotazioni
  • Trainer receiver with extra plug-in coils for shortwave reception. One could order six different coils for the set. It normally came with the 2.8 and 8 MHz range coil with the basic kit (same as the 28K model).
  • Prezzo nel primo anno
  • 12.00 $
  • Letteratura / Schemi (1)
  • 1951 Newark catalog Nº 51
  • Autore
  • Modello inviato da Vitor Oliveira. Utilizzare "Proponi modifica" per inviare ulteriori dati.

 Collezioni | Musei | Letteratura

Collezioni

Il modello T3BK fa parte delle collezioni dei seguenti membri.

 Forum

Discussioni nel forum su questo modello: Meissner Mfg. Div.,: T3BK

Argomenti: 2 | Articoli: 2

Fellow Radiophiles:

When I repair/restore a radio, I like to keep as many of the original components as possible in the radio. Recently, I started to replace bad or leaky paper capacitors in place.

The method is to cut one of the bad capacitor wires, and insert a small ceramic capacitor of the same value, and then short out the bad cap with a wire. This tends to preserve the apperance of the chassis and retains historical integrity in the set better than with hollowed out bad caps with new caps inside. These repairs can also be easily reversed.

 

Another type of capacitor to consider as very small substitutes, are the modern multilayer chip capacitors. Yesterday I tested several values of COG capacitors between 0.1uF and 100pF that were rated for 50V operation, and I found much less than 1uA leakage at 400V. These caps were about 0.1" long, which is still easy to handle with tweazers. Leaded caps in this size range can also be used.

I plan to continue exploring the suitability of these capacitors for nearly invisible leaky paper cap repairs. I will apply higher voltage to find their breakdown voltage and leave the chip caps powered up over a long time at high voltages to identify any voltage stress effects. If I can manage elevated temperature for the long term cap test, I will do that too.

Regards,

-Joe

Joe Sousa, 14.Mar.10

Weitere Posts (1) zu diesem Thema.

Fellow radiophiles,

Ron Roscoe has kindly provided this scan of the sales description for two Meissner kits. Ron also provided the schematic and assembly info I just uploaded.

Thank you Ron.

Regards,

-Joe

Joe Sousa, 26.Jan.10

Weitere Posts (1) zu diesem Thema.