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I build a common emitter amplifier based on BFP420 BJT, and would like to measure its gain and input and output impedance. As the gain should be within 25dB, so I connected a 40dB 50 ohm input/output

Hi, Thanks to all who appreciated the software. Consider it as my contribution to the group. Kind regards, neb

bug reports for this gcc bug are already exists. I just fixed NanoVNA code to avoid it.

Hi Rune, please don't think that I am referring to your own excellent software. I know it works when all the bits are in the right place ;) What I refer to is the general disease of of always needing

And file a bug report?

Isnt it amazing how i cant get an answer to a simple question!,if i wanted to use a tab i would have asked that!!,pointless as my tab doesent support the app,just wanted to know what screen to get out

just installed gcc and tested it. The root of cause is GCC compiler bug. It produces garbage code. I will implement workaround for this GCC compiler bug.

Hi Andy, Python 2.7 is end-of-life in little over a month. Developing new software using that cannot reasonably be encouraged. If anyone wants to port NanoVNA-Saver to other platforms or languages, it

file board.c, line 65

I don't have gcc at the moment, so I cannot implement patch for your compiler. You can try the following change: volatile uint32_t dfu_reset_to_bootloader_magic __attribute__ ((section (".noinit")));

you can fix that bug for your compiler by placing variable dfu_reset_to_bootloader_magic into non initialized section to prevent it's initialization on startup.

If something was written in a common base version, such as 2.7 for Python, which is probably pre-packaged in 90% of Linux OS's then I bet life would be much easier. - Andy -

With my compiler it leads to "dfu mode won't work" bug. original board.c method uses hardcoded random ram address which may be randomly overwritten by stack filler.

If you're not a noob to Linux, then why are you using Mint 17.x which is out of support? ???? I run nanovna-saver on Linux Mint 19.1 and it works quite well.? Installing Python 3.7 was no

Revert back to original( ttrftech ) board.c and change callback in UI, problems( not to jump address ) gone

The included cables are not Rosenbergers but are there any good and low cost sets? Or are they more than the VNA itself? John I ain't designing a ecm GHz device, just sweeping antennas

Hello Dick, There are several firmware versions available: /g/nanovna-users/message/7477 has a snapshot of firmware in the wiki.

Small post giving some background on the building and tuning of the 2GHz cavity filter. I was able to use my nanoVNA to check the tuning of this filter as described in another post

Actually, his Android app still calls home to mama Google for statistics.?? If you have your Android device's WiFi enabled and connected, the NanoVNA app starts right up. However, I run a firewall

Hi? Rune and QRP RX Yes indeed, running a calibration on my NanoVNA-H itself first, solved my prtoblem. The calibration with 60 segments and 10/5 Averaging over 10K to 900M is still running :-D:-D Oh