A fresh contender comes from, whose LibreVNA tops out at 6 GHz and shows some significant attention to design detail that puts it above some of the budget offerings.Īt its heart is the versatile Si5351 multi-way clock generator, accompanied by a pair of MAX2871 phase-locked-loop chips for the higher frequency local oscillators. The advent of commodity semiconductors that perform at high RF frequencies coupled with microcontrollers powerful enough to handle the data acquisition and processing might not yet have put those high-perfomance instruments within reach, but at our end of the market it’s opened the possibilities for some useful yet affordable devices. There was a time when a Vector Network Analyser or VNA was the type of instrument that cost as much as a very fancy car or even a small house.
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