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1620_Pentode

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ID = 21174
       
Country:
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 1620_Pentode = CV657
Similar Tubes
Other class quality (otherwise equal):
  6J7
Other base and other heater:
  310B
Predecessor Tubes 1609  

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Description

Low-microphonic version of 6J7.

 
Literature Tube Lore   
 
1620_286r.jpg
1620_Pentode: Collection JR
Jacob Roschy

 
374_11.png
1620_Pentode: Telefunken Werkstattbuch
Wolfgang Bauer

 
1620babanidoc.png
1620_Pentode: Babani 1951-1954
Patrice Zeissloff


Usage in Models 1= 1945? ; 1= 1948?? ; 1= 1948 ; 1= 1950?? ; 1= 1951?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5


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