I don't know where you got your info from but ttrftech's edy555 was the original designer of the NanoVNA and hugen modified the charging circuit and designed the current PCB and was selling them on taobao.?
Nooelec is NOT the official seller, hugen is through his taobao site and on a site on AliExpress. As far as hugen is concerned, Nooelec is selling clones of his design.?
If you're looking for board files, look at the ttrftech GitHub repo. If you ask hugen nicely, he might share his redesigned PCB with you. The biggest area to be concerned with in the design is around the port 1 and 2 bridge circuits and the mixer.?
... Larry
On Sun, 10 Nov 2019 at 1:32 PM, dhu1342@...<dhu1342@...> wrote: I purchased a NanoVNA from Nooelec (the authorized distributor from the edy555/ttrftech github page). I didn't realize at the time that all of the designs were actually based on hugen79's schematic designs, otherwise I would have purchased through Alibaba instead. Anyway, the point being that at the same time that I purchased mine, which I will consider "the original design", a friend of mine also purchased one from Amazon, which I will call "the clone design". When they came in, we took them both apart and compared the boards, and as far as we could see they were identical. We then calibrated both, used each to scan the RTL-SDR FM bandstop filter from 50KHz to 900MHz, overlayed the plots using NanoVNA-Saver, and they were also identical.
It seems that the Chinese manufacturers making the clone designs (at least this one) have finally copied the designs exactly. That makes it seam as though not publishing the board files at this point is mostly hampering the Ham Radio enthusiasts who are trying to help, and isn't doing much to stop the clone manufacturers. Are there plans at some point in the future to publish KiCAD files (or similar)? Has this been discussed at all? When I search for layout, I only see one message about the V2 design, and that 'appears' to have no plans for being open-source.
