What does CK stand for with. the Raytheon 5687?

Tubes Asylum

Questions about tubes and gear that glows. FAQ

Looking for some good 5687 tubes. Seems they are harder to find than the used to be. There were so many made.

iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.

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Topic - What does CK stand for with. the Raytheon 5687? - John PA 22:51:12 05/18/22 (7)

RE: What does CK stand for with. the Raytheon 5687? - Joe Appierto 05:50:27 05/21/22 (1)

Thanks. . . - John PA 13:16:11 05/21/22 (0)

RE: What does CK stand for with. the Raytheon 5687? - Nunki 10:09:43 05/19/22 (4)

RE: What does CK stand for with. the Raytheon 5687? - DAK 09:35:25 05/21/22 (0)

Sure. . . - John PA 10:56:02 05/19/22 (2)

RE: Sure. . . - MP62 19:41:08 06/11/22 (0)

computer or military use, maybe - elblanco 18:27:30 05/19/22 (0)

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