I have some NOS vacuum tubes for sale:
FC-10F, FC-732F,FC-735F,they can replace each other direct, Pa=2500W,
Va=3000V.TV transmiting tube up tp 1GHz,the socket is very easy to make( axial
electrode) ,they all with verg very good 3rd IMD performance),-53db@1000W.
$200/ea( cost price $1700).FU-832F similar 4CX10000D/J, but more filament
current(123A@7.5V) and smaller plate heat sink (that means more back pressure
than 4CX10000D) ) Pa(10kW).$350/ea, I have all specs about these tubes.
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