My new toy, the NanoVNA-H4. I checked SWR on my G5RV dipole, and a used "go-box" antenna I picked up at this past weekend's Houston County swap meet. Neat tool but required watching a half-dozen Youtube video's to figure out how to use it to test antenna SWR, Smith charting, impedance and the TDR feature to check coax length and integrity.?
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I can't speak to its accuracy, however a few Youtubers did a comparison with their Rig Expert brand analyzers and found the test results comparable. I also installed the 3rd party PC software that provided the ability to operate the device and real-time full-screen graphic charts as I moved dipole legs around. Also has the ability to export images to record baselines.
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I now know why my dipole will not tune-up on 30m (see chart attached).
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<$100 on Amazon:
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Rick WA2HRF Fell
