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Refurbished a Jackson 640 RF Frequency Counter, and added a Chinese Frequency Counter
I finished refurbishing a 1949 Jackson RF Signal Generator and attached a Chinese frequency counter to it. For such a vintage instrument this Jackson is pretty darn good. it settle down real fast and I am looking at the digital counter at 455 kHz only the "dot" XX numbers are gyrating, some what more gyrations in the mHz ranges but over all I think the Jackson is close enough.
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