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ID = 20825
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Tube type:  Vacuum Pentode   Audio Frequency 
Identical to CK549DX = DF651 = 6419
Similar Tubes
Heater different:

Base Subminiatur (wire-ends, flat) B5A
Filament Vf 0.625 Volts / If 0.01 Ampere / Direct / Battery =
Description Low level amplifier, 17 umhos. Replaced by 6419. 
Text in other languages (may differ)
Information source Röhren-Taschen-Tabelle, (Franzis RTT)   
- - Manufacturers Literature   

CK549DX: Radio und Fernsehen 13/56
Egon Strampe

sm9_g_1.gif CK549DX: RTT Schwandt
Günther Stabe † 19.8.20

Just Qvigstad
CK549DX: Raytheon Manual
Heinz Höger

Usage in Models 1= 1948?? ; 1= 1951 ; 1= 1953?? ; 1= 1954

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of



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