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Go to: https://www.thingiverse.com/thing:3818979 Click on “order this printed”. Create a million accounts with various entities, decide between a dozen aggregators, and between the dozen printers

Would it be possible to tell us - in layman's terms - how the spike at 300 MHZ can be corrected through software?

Cecil To the best of my knowledge no one has demonstrated any performance differences between the “good” ones and the “bad” ones. Please correct me if that is not the case. WA8TOD Is it

For those of us who have no capabilities to print this object, would you be able to give us some direction as to how to get it printed and shipped to us? Thanks. It looks perfect for my needs

Hi Jim How are you measuring dynamic range? Can you publish a pic of the 80 dB? WA8TOD

No problem Jerry. I probably should have made more of the possibility that there could be some real stinkers out there. Aside from buying from Hugen there probably isn't a way to be sure of getting a

Thanks you. I have installed dfu-util on my LM 18.3 perfectly. I am still waiting for my unit to arrive, so I cannot perform any tests yet. Vy 73 de Andy

Hi Jerry, Your guess regarding how the Matlab function is used is correct. Four gamma measurements need to be recorded. They represent S11 values for a short, an open, the reference load, and the

09:33 Sun 25 Aug 19 , Andy G0FTD via Groups.Io wrote: Do you mean the toolchain? Yes, just follow README.md, arm-none-eabi-* is what you need Under debian you can found dfu-util package, this

Mike, Yup, your right, thanks for the corrections. And for the report. I just wanted to emphasize that it's not so simple to distinguish good from bad, which seems to be on the minds of many

Probably not. The last I heard Hugen was only selling via Alibaba sites: chinese language Taobao.com and international Alibaba.com. Not necessarily a bad clone of course. Mike

Is it one of the Hugen good ones?

Before I joined this group and before I knew anything about Hugen, I bought the attached from ST-EC. How does one tell a good black one from a bad black one?

Fun puzzles. Casual users just wanting to check an antenna or measure a filter with their nanoVNA need not worry about these inner workings. I mentioned the script from Jeff in posts 1307 and 1311,

Hi Jerry If you re-read my first message (which was included below the text of my second email and is still present at the end if this one) you'll see I acknowledged that I may have been lucky in the

Are there any Linux based tools available ? Is there anyway to upload the .DFU files to the device on Linux ? I use Linux Mint 18.3 here, or Raspbian Linux. Also, has any supplier only sent out a

I think I have all three. A good Black one with shielding that has 80 dB dynamic range on the low end and 60 dB on the high end. A White one without shielding that has 70 dB on the low end and 50 dB

Hi Hans. I have a copy of the original page from the magazine. I can try to do a scan for a pdf. However, the main figure that is fundamental to the article is in my prior message post as a LT Spice

There's a bunch of different manufacturers making clones. Seems dangerous to make blanket statements about performance on the basis of screened (shielded) vs unscreened or black vs white. Perhaps

Hi Jerry, Regarding any questions you have regarding the Matlab function I posted for S11 correction, if you were to post them in that original thread, I would be happy to try to answer them. Best,