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| GE (General Electric) JAN-CG-5528 / C6L Thyratron Vacuum Tube. Used primarily in vacuum tube regulators for industrial, variable speed process lines in the 1950's and 1960's. Some of the Reliance Electric Co. VSC's used this tube. The tube is good and has been tested by me under a typical condition of operation. It is also in good physical condition. Thank you for your interest in this vacuum tube from the past, Craig |