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      www.dxzone.com/catalog/Technical_Reference/Vacuum_tube The DXZone.com list in Technical Reference/Vacuum tube a curation of 26 useful links about Vacuum tube, electron tube, thermionic valve, valve resources.
    • Ameritron AL-811H tube selection : resource detail

      www.dxzone.com/dx25170/ameritron-al-811h-tube-selection.html This article examines the performance of the Ameritron AL-811H amplifier with the supplied 811A tubes and with 572B tubes, and details a procedure for replacement of ...
    • Radio Tubes - Antique Radios: Parts and Tubes

      www.dxzone.com/catalog/Antique_Radios/Parts_and_Tubes The DXZone.com list in Antique Radios/Parts and Tubes a curation of 30 useful links about Tubes for antique radio.
    • Radio Equipment/HF Amplifiers/Ameritron AL-811

      www.dxzone.com/catalog/Radio_Equipment/HF_Amplifiers/Ameritron_AL-811 The DXZone.com list in Radio Equipment/HF Amplifiers/Ameritron AL-811 a curation of 11 useful links ... and details a procedure for replacement of existing tubes. ...