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That looks correct, but I think that I would put a capacitor in series with the input, so that the low resistance of the headphone output of the CD player (or whatever) does not affect the resistance measured at the pot. Also it appears that you have the pot wired backwards, with ground going to what should be the high end. It will work ok as wired but the pot will need to be turned CCW for max input, rather than CW.
But back to more basic stuff... does the tube light up? does the power supply make around 125 (or so) DC? ... why do you keep breaking the coils? do you not have a plastic (nylon ?) hex tool for adjustment?
jr
Edit add:
Also check the wiring of pin 2 of the oscillator coil... schematic shows it connected to ground, not to pin 4 of the tube. Connection of C-6 would also not be correct if this is so.
Last edited by jr_tech; 08-07-2013 at 03:00 PM.
Reason: add note
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