(!!!) (BEST PAIR) 6JB6A RCA branded GE NOS 1960's (80ma and 86ma)

1 pair) 6JB6A RCA branded GE NOS 1960's

1 tube) 80ma Gm=8000 ROUND vent holes

1 tube) 86ma Gm=7800 SQUARE vent holes

Good Ma range 60-75ma

Good Gm range 6500-7500
 

6JB6A specs: (6.3V @ 1.2A, Gm=7100, Watts=17.5)

recommended for:
Drake T4XB HF Transmitter
Drake T4XC
Drake TR4CW