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Re: We started selling nanoVNA-H4 using STM32F303CCT6 and 4-inch LCD
When I purchaed the nanaVNA-H4 I logged into the Alibaba website and send her a message requesting information about purchasing via paypal. That is how I got the instructions. As others have mentioned
By Mike N2MS · #9943 ·
Re: TDR Measurement with NanoVNA Saver #nanovna-saver #tdr
Bob, I think you are mixing messages but I just purchased the NanoVNA-H-4 with the 4 inch screen. If you're considering another I would get this unit. Mike N2MS
By Mike N2MS · #9942 ·
Re: Improving the performance of a pre-V3.4 original Hugen nanoVNA
I'm very sorry, a typo, the TX (CH0) is not that bad, I measured and found while symulating 58.82 Ohms, *NOT 68.82 Ohms. * *Jos * Op 20-1-2020 om 15:49 schreef hugen@...:
By Jos Stevens · #9941 ·
Re: TDR Measurement with NanoVNA Saver #nanovna-saver #tdr
Mike, Thanks for the information.? I did not buy the device because I have a second nano that does okay.? But after reading your latest suggestion I guess I'll buy the thing and see if I can upgrade
By Bob Albert <bob91343@...> · #9940 ·
Re: TDR Measurement with NanoVNA Saver #nanovna-saver #tdr
Mike, Thanks for the information.? I did not buy the device because I have a second nano that does okay.? But after reading your latest suggestion I guess I'll buy the thing and see if I can upgrade
By Bob Albert <bob91343@...> · #9939 ·
Re: TDR Measurement with NanoVNA Saver #nanovna-saver #tdr
Mike, Thanks for the information.? I did not buy the device because I have a second nano that does okay.? But after reading your latest suggestion I guess I'll buy the thing and see if I can upgrade
By Bob Albert <bob91343@...> · #9938 ·
Re: We started selling nanoVNA-H4 using STM3
Ok. Thanks. On Mon, Jan 20, 2020 at 1:12 PM, Larry Rothman<nlroth@...> wrote: There is a link in the Wiki.
By Chris O · #9937 ·
Re: Improving the performance of a pre-V3.4 original Hugen nanoVNA
Did you include the SA612 with power? Using another vna I measured fairly accurate ch0 resistance with power on -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files:
By Erik Kaashoek · #9936 ·
Re: Corrupted firmware.
Image attached.
By Brian Garber · #9935 ·
Re: Improving the performance of a pre-V3.4 original Hugen nanoVNA
90%+ Isopropyl Alcohol on a cotton swab will make quick work of that flux. - Bill
By Bill · #9934 ·
Re: TDR Measurement with NanoVNA Saver #nanovna-saver #tdr
Bryan, Thanks. I thought it had to do with the mismatch between the coax and S11 port. I had a length of RG-6 handy and see the same effect with that 75 ohm cable and see the same effect. Since the
By Mike N2MS · #9933 ·
Re: Corrupted firmware.
Ok, so one last try with USBDeview. In the image you can see where I've highlighted a Port_#002.Hub, SMT32 Bootloader line. However, the very last line is what shows up when I reset and enable DFU on
By Brian Garber · #9932 ·
Re: We started selling nanoVNA-H4 using STM3
There is a link in the Wiki.
By Larry Rothman · #9931 ·
Re: We started selling nanoVNA-H4 using STM3
Can you post the instruction sheet(s) shown behind the unit in the photo? On Sun, Jan 19, 2020 at 10:45 PM, RFy<gpdxdveil@...> wrote: How fast full sweep and how many sweep points on this
By Chris O · #9930 ·
Re: TDR Measurement with NanoVNA Saver #nanovna-saver #tdr
Bob, Flash the latest firmware. TDR functionality has been part of most Nano firmware since mid Oct. I know your USB connector is pooched but did you ever buy the STM-Link device I gave you the link
By Larry Rothman · #9929 ·
Re: TDR Measurement with NanoVNA Saver #nanovna-saver #tdr
How can I add TDR capability to my early version of the nano?
By Bob Albert <bob91343@...> · #9928 ·
Re: TDR Measurement with NanoVNA Saver #nanovna-saver #tdr
I've added a screenshot of the display to the Pictures Section Mike N2MS
By Mike N2MS · #9927 ·
Re: TDR Measurement with NanoVNA Saver #nanovna-saver #tdr
Mike, You need to think about what you are seeing in the time domain. What the software produces is the impulse response (the positive going blips) and the step response (the steps in your plot) of
By Bryan, WA5VAH · #9926 ·
Re: *** FIX FOR NANOVNA-SAVER PYQT5 INSTALLATION PROBLEMS ON LINUX MINT 19.3 *** #nanovna-saver
/g/nanovna-users/files/NanoVNA%20PC%20Software/NanoVNA-Saver/nvna-s-pve-rev-b.pdf - typos fixed.
By Nick · #9925 ·
Re: New user: NanoVNA-H how to determine hardware version
On Mon, Jan 20, 2020 at 08:29 AM, Alan G3XAQ wrote: " None of this seems to tell me which hardware version I have received. I've trawled the messages on here and can't see how to find it. "
By hwalker · #9924 ·