I have been playing with my favorite NanoVNA-F.

Here are some reference links to this toy:

• DEEPELEC.COM vendors website
• NanoVNA General Support website
• NanoVNA Sharp (Real time control from Windows PC)
• NanoVNA Saver. Save data files for off line processing
• NanoVNA Web based realtime viewer
• NanoVNA Android Client (Requires a USB c OTG cable)
• GetScreen Screen Capture program for the PC

Sample Screens of various antenna:

CBC-435