The µTracer tube tester kit. Part 1: intro & unwrapping
Welcome to a new mini series on Elektor e-zine. Like many of you I have been hunting for ages for a real tube tester like the high-end ones from Neuberg, AVO, Funke or Hickok. No cigar, those things are unobtainable and will forever (and perhaps rightly so) remain in the hands of collectioneurs and saveurs. These instruments are huge, bulky and impressive to look at with their dozen or so controls and analog meters, and a thick book to look up tube settings. Just check out eBay & Co. and you may understand why the cost and rarity of these instruments made me decide to abandon the search, and start looking for a state of the art equivalent.