Hi all,
regarding saving the scan and download it later, I think a nice firmware feature would be to schedule a delayed scan followed by a pause after the scan.
This will allow to hang the NanoVNA to the antenna (for example HF multiband dipole like FD4, or VHF YAGI) and perform a scan without the feeder.
The delayed start of the scan is necessary to allow enough time to install the antenna in the position.
Thank you,
Ady (YO2NAA)