The NanoVNA is a compact, cost-effective Vector Network Analyser (VNA) that has become an essential tool for amateur radio enthusiasts. In The NanoVNA Revisited, Hardy (G4HWB) provided a practical guide to using this versatile device for antenna tuning, filter design, and transmission line analysis.

The talk covered:

• How the NanoVNA works – from generating RF signals to analysing reflected and transmitted waveforms.
• Practical applications – including SWR measurement, return loss, and line loss testing.
• Calibration essentials – ensuring accurate results by calibrating correctly at the measurement point.
• Smith Chart basics – a simplified guide to understanding impedance plots.
• Common limitations – including harmonics, parasitics, and power considerations.

Whether you’re fine-tuning an antenna or exploring more advanced RF analysis, the NanoVNA is a powerful tool that fits in your pocket. The full presentation  & video is available here.