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For Sale Eico 667 Tube Tester
I have a 666. What's to calibrate?
Two pots inside, with a VOM across the AC primary transformer tap and set to 130VAC with the line-adjust pot. One pot is then set to full meter deflection (adjacent to the filament selector switch), the other to 1/2 meter deflection (adjacent to the line-adjust pot) with various buttons pushed. Takes 10 minutes apart from removal and installation into the case. Did mine last night. Does not have sockets for pre-octal tubes, but does run well up into the compactrons and nuvistors. And it lists a lot of the pre-octals on the chart, so there must be adaptors available. Calls itself a "dynamic conductance" tester. Weight is about 12 pounds, or so. Not overly large. Good, easy-to-read meter and very easy-to-roll tube chart. Eico has a reputation for errors on its early tube charts, BTW. Now to trace a niggly little fault, and intermittent to boot... the worst kind. I expect it is a bad connection combined with a wire-or-two out of place so that the problem only shows on occasion. If I get it fixed, this one will go at Kutztown. I snagged it as the price was right, but it is not a keeper... and of the three I have, it is the least appealing. The other two do the older tubes as well. Peter Wieck Wyncote, PA |
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