The M5045 is a 2-port, 4.5 GHz Vector Network Analyzer that delivers metrology-grade performance in a more economical package that excludes a number of advanced features, like vector mixer calibration, TRL calibration, frequency offset, time domain and gating.
 URL: 
https://coppermountaintech.com/vna/m5045-2-port-4-5-ghz-analyzer/?utm_source=mwj&utm_medium=vendor+view&utm_campaign=website