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Hello Hans-Peter, you're right: The algorithm assumes that the first -3dB point it finds is the -3dB point of the filter. I'm not certain what's a good and generic way to avoid this to allow filters

All nanoVNA use the internal SI5351 outside the formal supported spec. e.g. upto 300MHz in fundamental mode. Above 300MHz it switches to harmonics mode (till 900 MHz) and even further harmonics modes

Please see the attached pictures. The one in the case I am calling the good one the other one has issues. 1. Spur on display around 300MHz. This appears to change and amplitude but is always there. 2.

Hello Rune, First of all many thanks for this great software! Maybe you can watch the bandwidth calculation again. A ripple on a bandpass does not capture the filter width correctly. In the attachment

F-2 might be a nice instrument to wait for... hopefully w/full 4 port setup extended f range and the larger display. Really I think there are solutions for the current display issue including the

I for one would like to see options to hack in a larger screen. Even one the size of the screen used on the HP/Agilent/Keysight HP8753D. It would be great to be able to turn one of these into a bench

Mine appears to be 100Hz steps. Test method, use receiver, listen to span set for 300Hz and I can hear 3 distinct tones. Does the newer firmware use lower steps ? 73 de Andy

I've been trying to get this working - keeps coming back and saying the ID doesn't match even though it does.? Since the last commit to this was several years ago - there is most likely some bugs

If you are using original firmware and touchscreen control, then this map shows where to set START and STOP frequencies (under STIMULUS) http://ormpoa.altervista.org/Hnano.htm These settings can be

I ordered a set of attenuators on Ebay. Logarithmic and linear... I'm not at home right now but when I get back, I'll try it on the computer.

Thanks everyone for the info. I have what appears to be a two trace version, 900Mhz, and to be honest it appears to be satisfactory. No crashes etc. Although there is one thing that I have not yet

Gabriel is the layout designer and RF engineer /g/nanovna-users/message/3420 /g/nanovna-users/message/3984 /g/nanovna-users/message/4092

https://github.com/nanovna

I found this GitHub project for DFU installation by Android app https://github.com/UmbrelaSmart/android-stm32-dfu-programmer

The github page you refer to is from Henrik Forsten, so it is not "mostly a copy of this nice design", it is the very same design! Op 11-11-2019 om 13:19 schreef erik@...:

Hi Gabriel, What you are saying sounds fantastic. That is the kind of project that I would like to be a part of. I don't have a need to see the designs early. I'll be patient, and get involved when

Trying one more time to add the attachments.

Hi Hugen, Thanks for joining the conversation. I appreciate all of the work that you have put into this design, and for your efforts to turn it into an actual product. Your work seems to have been the

Use QRP firmware: https://github.com/qrp73/NanoVNA-Q/releases Based on my own trivial experiments, metal enclosure for worse unshielded clone makes things somewhat worse above 600MHz. Otherwise,

if you worrying about battery indicator, you can try NanoVNA-Q: https://github.com/qrp73/NanoVNA-Q/releases it has allows to calibrate battery offset. So, you can tune it for your diode. In addition