The 8576 or 264 is a 3000 watt, forced air cooled, pentode with a maximum frequency for full output of 30 MHz. Originally a Penta Labs tube that was later made by Eimac. The later Eimac tube has slightly different dimensions and characteristics.
Length = 4.50" Diameter = 4.41" Max voltage = 5000 Max current = 2 amps Fil voltage = 6 Fil current = 17 amps
New Old Stock * No longer available for export MFR: Eimac