High-voltage Kenotron Rectifier Tube 20kV / 4mA Wave Rectifier Vacuum NOS Tube (B7G 7-Pins). Cross Reference: 1C11P 1T11P 1Ț11P 1Z11N 1Z11P 1Y32T 1Ц11П USSR 20000V DY82 DY86 DY87
