This video goes over the Nano VNA and briefly explains what SWR is, and how to calibrate, customize, and understand the Nano VNA's display, as well as how to use it on a computer.
NANO VNA: [ Ссылка ] (There's lots of sellers since it's open source, feel free to give a search on amazon, just make sure it's V3 firmware or later)
Universal PL259 to SMA adapter - [ Ссылка ]
Universal BNC to SMA adapter - [ Ссылка ]
Carrying Case - [ Ссылка ]
