Rare High Power Vacuum Triode

Description

Old Stock
Decommissioned transmitter spare
Filament tests good and lights up
Tested OK for emission
Good electron current present
with 1000 V between cathode and plate
with 0 volts on grid  ( over loads my supply )
Rare High Power Vacuum Triode
Spare From  AM Transmitter
Appears to be  New Old Stock
Part  # 8987M
12.6 Volt Filament
Dc Hipot tested Anode to filament 5000 VDC
Dc Hipot tested grid  to filament 2000 VDC
Dc Hipot tested grid  to anode 2000 VDC
Mounting flange is grid
Filament is center taped 12.6 Volts
Massive heat sink - estimated dissipation about 3000 Watts or more
I do not have actual Tube data as
I have not been able to locate the tube number on the web
But additional research would indicate it to be a 5762/7C24 power triode
used in 5 KW AM transmitters - the dimensions and filament data match
and that tube data is available on the web.
Will be shipped in
- foam lined -
plastic Case