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

GB-28D7W

Information - Help 
ID = 57862
       
Country:
United States of America (USA)
Brand: Sylvania (Hygrade, GTE, Nilco); Emporium (PA)
Developer:  
Tube type:  Double Beam Power Tube   Power/Output 
Identical to GB-28D7W
Similar Tubes
Other class quality (otherwise equal):
  28D7 ; 28D7W

Base Loctal-8, B8G (Sylvania, 1938)
Filament Vf 28 Volts / If 0.4 Ampere / Indirect
Description Ruggesized, long-life version of 28D7. 
Information source - - Manufacturers Literature   
- - -   
- - -
- - -

28d7~~1.png GB-28D7W: Manufacturer's Literature
Emilio Ciardiello


Just Qvigstad
 

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]
  
rmXorg