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(!!!) 242 Duovac USA brass base used/tests like new 1930's small slit in plate (120ma)
(!!!) 242 Duovac USA brass base used/tests like new 1930's small slit in plate (120ma)
By Tube World
$ 999.99
242 Duovac USA brass base used/tests like new 1930's small crack in plate - you can see filament glowing through small slit - see photo - does not effect tube performance
120mA
Gm=4800
SINGLE TUBE, NOT A PAIR
Tested on Amplitrex
Test Data: Vplate=500V
Vgrid=-1V
Iplate (mA) NOS range 100-120ma
Gm NOS = 4000
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
See more: vacuum tube
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 242 Duovac USA brass base used/tests like new 1930's small slit in plate (120ma) "Pin It")