The 4X150D tetrodes are compact power tubes intended for use as amplifiers, oscillators, or frequency multipliers at frequencies up to 500 megacycles. They are designed for operation at a heater potential of 26.5 volts.
New Old Stock * No longer available for export MFR: RCA SKU: 4X150D-RCA
These 4-400A Eimac transmiting tubes are low hour pullouts, removed from working equipment. Clean Used * No longer available for export MFR: Eimac * MFD: Eitel-McCullough, Inc. NOTE: The photo is for reference only. Ninety Day Warranty
These 4-400A Eimac transmiting tubes are low hour pullouts, removed from working equipment. Clean Used * No longer available for export MFR: Eimac * Made in USA SKU: 4-400A-8438-JAN-EI-P Ninety Day Warranty
These 4-400A Eimac transmiting tubes are low hour pullouts, removed from working equipment. Clean Used * No longer available for export MFR: Eimac * Made in USA SKU: 4-400A-EI-JAN-CBXT-P Ninety Day Warranty