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Metal Case observation

WA2ZKDWA2ZKD
in KiwiSDR Discussion
There have been numerous threads and discussions about circulating currents and spurs and noise and the like.

I note that on the Seeed metal case, one of the endplates touches the ethernet connector along one edge. Is that intentional?

Comments

  • PowernumptyPowernumpty
    I think when the case was being tested it was found that grounding via that end (and fixings) gave the lowest noise in the test setup.
  • G8JNJG8JNJ
    >
    >I note that on the Seeed metal case, one of the endplates touches the ethernet connector along one edge. Is that intentional
    >

    The problem is that it doesn't make very good or consistent metal to metal contact.

    I found that if I 'wiggled' the Ethernet connector I got better or worse noise spurs, depending upon what was touching what. In the end I soldered a brass strip between the Ethernet connector screen and the brass mesh I used to cover the inside of the end plate.

    http://forum.kiwisdr.com/uploads/editor/ao/sqwxoc7s8gm9.png
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