Hi Joe,
Just a short comment to make the things clear. What's concerning the LibreVNA group at groups.io.
I have asked Jan and he told me that this is unofficial group. It had been created by unknown person before the official LibreVNA group started, so nothing could be done about it.
In any case, You can reach Jan directly.
If you go to the designer's github account :
https://github.com/jankae/LibreVNAUnder Quick Start, "For general questions or discussions, the LibreVNA group is probably the best place."
The link points to
https://groups.io/g/LibreVNA This is the only group I am aware of. If there is now an official group as you suggest that is no longer censoring the posts, please provide the link to it. You may want to suggest that the designer also provide that new link from their git account as well.
OWO chimed in on their new design as well and provided the following link:
https://nanorfe.com/nanovna-v3.htmlPreliminary specifications:
100kHz - 6GHz frequency range without using harmonics
(I would like to see 10kHz or lower and at least provide the resolution of the original NanoVNA.) 120dB dynamic range to 3GHz, 100dB dynamic range to 6GHz
(120dB ??!! If it could do that at 10kHz, it opens up a whole new market) Higher dynamic range at 6GHz compared to 50dB dynamic range of existing open source VNAs
0.01dB trace noise
0.1dB typical measurement uncertainty (neglecting cal kit errors)
Superior linearity error compared to existing 6GHz open source VNAs
10k points/s maximum sweep speed
(Now we're talking. ) Full two port - measures S11, S21, S12, S22
Adjustable IFBW from 10Hz to 100kHz - can measure narrowband devices
Supports Unknown Thru and other advanced calibration methods
Supports NanoVNA-QT and NanoVNA-Saver software
(Don't care) TDR with millimeter level resolution
(Ditch that LCD and let the PC do its thing) Estimated price $400
(If it ran down to 10kHz with decent resolution, I know a few people that are going to be very interested in it.) Discussion group:
https://groups.io/g/NanoVNAV3