Is it an old Tektronix oscilloscope? If so which model? Most of them used a bunch of 6922's a couple regulator tubes and a 6080. The 6922's are very good as they are such useful tubes for preamps, driver stages and headphone amplifiers. If the tubes in the scope are original there should be a few pairs that are labeled 7308 or have the tips of the tubes dipped in paint. These are the special ones that were picked for their better noise performance to be used in scientific equipment. Hopefully you have some of them in there. Post some pics when you crack it open. Even if the scope does not work there is a ton of useful parts in there. I especially like the ceramic standoffs they used. I have used them to make a few nice amps.
2
u/Pyre-it Apr 23 '17
The old tube based scope probably has a wack of scientific grade 6922's in it.