(1) Tested Hytron JHY-0B2 Tube Date Code 0-39 Hytron 0B2 Voltage Regulator Tube
(1) Tested Hytron JHY-0B2 Tube. We prefer the versatility and precision of Hickok TV-10 military testers and use them almost exclusively except in rare instances when pinout/socket compatibility is not possible.