6BX7GT GE "O" getter gray plates 1963

1 tube) 50/56ma Gm=8300/8500 GE 1963

1 tube) 53/59ma Gm=9200/9300 GE branded Westinghouse 1960's

 

Tested on Amplitrex

Good NOS range 40-45ma

Good NOS Gm = 7000-8000

    

 

Recommended for

- Single Power

(Vfil=6.3V @ 1.5A, Vplate max=500V, Iplate max=60ma, Pout max = 12 watts total for both triode sides)
Typical Characteristics Class A Amp:
Vplate= 250V
Iplate= 42ma
Vgrid=-15
Rp= 1300 ohms
Mu= 10
Gm= 7600 mhos