Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 16708
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Thyratron   Power-supply 
Identical to FG57 = ST57 = GL5559 = 5559
Similar Tubes
Other shape (e.g. bulb type):

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Was used by Industrial
Filament Vf 5 Volts / If 4.5 Ampere / Indirect
Description This tube is a negative control mercury vapour type for use where it is desired to activate it with a change in negative grid voltage. It requires relatively little grid power and is suitable for use in relay circuits where current flow is desired in the absence of grid excitation. grid voltage -1.75 at anode voltage of 100 and -6.5 volts at anode voltage of 1000. It is listed on page 48 of the "Story of Electronic Development at the General Electric Company " Dated Dec 10th, 1930 Also made in Italy by Fivre. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 74 x 169 mm / x 2.91 x 6.65 inch
Weight 125 g / 4.41 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   

fg57_so.png FG57: Valvo Röhrentaschenbuch 1957
Anonymous 10 Collector

Just Qvigstad
FG57: Manufacturer's Literature
Emilio Ciardiello

Collection of



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]