This is a very versatile instrument and it is  worth his weight in gold. It provides me with the possibility to test and measure the impedance and transmissions characteristics of almost any circuit or network up to at least 500MHz with good accuracy and from 500 to 1300MHz with sufficient accuracy to give a good indication of circuit performance.

Did my first calibration and tested LPF for Ultimate3S WSPR transmitter. Some filters needed a modification to obtained akseptable parameters. Results are below: