display tube) 242 Duovac USA brass base used/high current 1930's

HIGH MA - over 160ma

Tested on Amplitrex

Test Data:

Vplate=500V

Vgrid=-1V

Good NOS mA range 100-120ma

General Info

242 is Duovac's version of 242A WE

242/242A: Vplate=1000V max, Iplate=90ma max, u=12.5, work best at 900V and 55ma in SE amp
242/242A will work in PP amp at 1100V and low plate current of 10-15ma

You cannot sub a 242 for a 211