The DW-2 is a 75 watt dissipation triode with a mu of 12 made by the National Tube Company. The tube seems to be identical electrically as the RCA 852. National claimed that it had a 6 wire grid that made it better. Later production of this same tube was marked 852, as seen in the second example, probably to increase sales. Glass work seemed of poor quality.

Length = 8.81" Diameter = 4.59"
Max voltage = 2000
Max current = 75 ma
Fil voltage = 10
Fil current = 3.25 amps         GOTO INDEX