Will our HP 6516A 3kV power supply finally manage to light up our mystery CRT tube? Our sponsors - PCBWay: fast turn PCBs, https://www.pcbway.com/ - Electro-Rent: https://www.electrorent.com/ - Keysight: test instruments: https://www.keysight.com/ - Samtec: connectors: https://www.samtec.com/ Support the team on Patreon: https://www.patreon.com/curiousmarc Buy our merch on Teespring: https://teespring.com/stores/curiousmarcs-store Get more info on the companion site: https://www.curiousmarc.com/ Contact info: null