https://www.gigaparts.com/nanovna-h4-50khz-to-900mhz-vector-network-analyzer.html
This is a pretty good deal. 4″ screen and all the goodies. I have this exact unit.

https://www.gigaparts.com/nanovna-h4-50khz-to-900mhz-vector-network-analyzer.html
This is a pretty good deal. 4″ screen and all the goodies. I have this exact unit.