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608

Information - Hilfe 
ID = 28979
       
Land:
USA
Marke: Marathon (tubes), Northern Manufacturing Co.; Newark, NJ
Entwickler: Marathon (tubes), Northern Manufacturing Co.; Newark, NJ 
Typ:  Triode (Hoch-) Vakuum   Detektor 
Identisch mit 608
Erste Serie 1927 Saga of the Vacuum Tube, Tyne page 345

Sockel USA-UX-4-Stift-Sockel (2 dick), ab 1924 2 Seitenanschlüsse.
Anwender Radio/TV-Empfang etc.
Heizung Uf 5.5 Volt / If 1 Ampere / Indirekt / Spezifizierte Spannung ~ =
Beschreibung

Early AC tubes for conversion of battery radios. The filament was connected to side terminals on the tube base. Usually sold with a Marathon AC kit, consisting of a cable with the necessary clips to connect the heaters. This tube had an amplification factor of 7.3, anode impedance of 9500 Ohm and a mutual conductance of 75 microhmos.

 
Abmessungen (BHT)
inkl. Stifte/Spitzli
x 119 x 45 mm / x 4.69 x 1.77 inch
Gewicht 57 g / 2.01 oz
Literatur Saga of the Vacuum Tube, Tyne   Page 345
-- Collector info (Sammler)   

608_marathon_base.png 608: own collection
Peter den Boer † 2025


Just Qvigstad

Sammlung von

 
usa_marathon_ac_608_tube_01.jpg

608
 

[rmxtube-ge, noindex]
  

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