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ID = 6377
United States of America (USA)
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   Universal 
Identical to 99 = B_CommontypeUSA_Trio = CX299 = UX99 = UX199 = UX-199_code9
Similar Tubes
Normally replaceable-slightly different:
Other base:
  57TV99 ; 99UX ; C299 ; UV99 ; V99
First year Apr.1925 Saga of the Vacuum Tube, Tyne Tyne page 314 - first as UX199
Predecessor Tubes V99   UV99  

Base UV199 (Codex=Bo)
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 0.06 Ampere / Direct / Battery =

The "Saga of the vacuum tube" by Tyne tells us on page 314: "In April 1925 the UV199 was superseded by the UX199, announced August 1, 1925. Production continued up to 1931, although after 1927 few new receivers were built to use it. Nickel-plated contact pins were introduced in 1927."

After some time the UX tubes were noted only by the numbers and a bit later only by the last two digits.

Dimensions (WHD)
incl. pins / tip
x 84 x 25 mm / x 3.31 x 0.98 inch
Weight 26 g / 0.92 oz
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   

uv199_triode_tube~~16.gif 99: Fin Stewart
Fin Stewart

Just Qvigstad
Usage in Models 1= 1926 ; 3= 1927 ; 2= 1928 ; 1= 1930?? ; 1= 1931?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):8

Collection of




99 Philco_long pins

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