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99

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

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

The "Saga of the vacuum tube" by Tyne tells us on page 314: "In April 1925 the UV199 was superseded by the UX199, announced August 1, 1925.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
Literature Taschenbuch zum Röhren-Codex 1948/49   

 
99wards_1_klein.jpg
99
Geri Meier

 
171_18.png
99: Telefunken Werkstattbuch
Wolfgang Bauer

 

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

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


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