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> CK650 650 subminiature mystery pentode tube nos
CK650 650 subminiature mystery pentode tube nos
You get one Raytheon CK650 subminiature pentode tube in a white box. These tubes are New Old Stock, marked and branded. This tube is still a mystery here at TTW, I have not found any specs anywhere online yet. I think sometime in the early fifties Raytheon renumbered some of there tubes, Moving the CK5?? to the four digit series. Most of the online datasheets are for the tubes after they were renumbered and it can be difficult to find data on the old numbers. This tube is a large envelope tube like the 5902 Beam Pentode. It has the same construction as the 5902 and the same base pinout, but the grid wires are more closely spaces so I know it is not a 5902. What is it??? If you have an idea I would love some info on it.
