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Tube synth diy

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i got ahold of a pulse width osc. from 1 to 17,000 cycles

2007-04-26 by kidkrazy58

it was ok but i got it for the tubes mainly and paid like 40 for it. 
it had these 7119 tubes in them actuelly 5 of them and 11 other tubes 
one telefunken 12au7. The 7119s say made in holland but arnet marked 
amprex but are marked Beckman. they have a d getter like the old 
amprex are supposed to but i dont know.imtrying to find the value of 
these. i cant tell if the tops are pinched what does a pinched tip 
look like on a tube cause in the example i couldnt see a diffrence. ok 
thanks

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