radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

DF33

Information - Help 
ID = 2752
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Developer: Mullard Wireless, London (see also Mullard Radio Valve) 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to DF33
First year 1939 -- Collector info (Sammler)

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uuo)
Was used by Radio/TV-reception etc.
Filament Vf 1.4 Volts / If 0.05 Ampere / Direct / Battery =
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   

df33.png
DF33: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †

df33_so.png DF33: rtt
Anonymous 10 Collector

More ...

Just Qvigstad
df33_data.png
DF33: Mullard Valve+Service Manual 1951
Trev Levick

Usage in Models 1= 1939?? ; 2= 1945 ; 2= 1946? ; 8= 1946 ; 1= 1947? ; 3= 1947 ; 1= 1948?? ; 4= 1948 ; 1= 1949 ; 1= 1950

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):24

Collection of

 
df33_a.jpg

DF33
 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  

Data Compliance More Information