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One recommendation on rejuvenation. Beg, borrow or buy the most recent Rejuvenator you can find. Something like a Sencore CR31A (Supermack) or CR70, BK 467 or newer, etc. They have much safer and effective rejuvenation functions than the older units out there. The older units simply charged a large cap and you let 'er rip with the 'rejuvenate' button with next to no control.
However - I personally do like to keep one of these old units (a BK 445) in my car for spot testing a CRT when visiting potential candidates for my hobby. The 440/445 is small, cheap and great for a quick check of emissions, shorts, etc. I also use it to wake up CRT's (running the filaments at normal voltage) for periods of time - or in some cases running the filaments of suspect tubes at slightly higher voltages. Saves wear/tear on the more expensive testers for this function.
My 2 cents!
Mark
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