I have a NanoVNA H4 and it's great for measuring antennas from inside the shack, but not quite rugged enough to used outside up a ladder. Also the display is hard to read in the sunshine.
For outside use I have one of these:
https://www.sdr-kits.net/VA5_PageIt's sturdy and easy to read, although the menu system is a little cumbersome. My favourite feature for multiband antennas is a simulatnaeous view of 5-band VSWR.
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Mike G8GYW
