GiamMa-based researchers SDR R&D IoT: xaVNA 135MHz to 3.5GHz a full featured,low cost 2 port,simple & cheap #Vector #Network #Analyzer, including support software by xaxaxa-dev #SoftwareDefinedRadio #SDR #xaVNA #VNA #Antenna #Impedance #FPGA #VHF #UHF #Ham