NOS EIMAC POWER TETRODE TUBE 7580W 4CX250R IN ORIGINAL PACKAGING (1978)
ELECTRON TUBE 7580W 4CX250R, MFR EIMAC. employ the 4CX250B. where shock and/or vibration preclude the use of non-ruggedized tube types. The 4CX250R/7580W is designed specifically for use in Class AB1 linear amplifiers.