6 GHz directional coupler. Includes (1) 18GHz 1.18max SWR SMA adapter.
Create a scalar network analyzer (SNA) for measuring return loss by pairing your USB-SA44B spectrum analyzer with this coupler and a USB-TG44A (up to 4.4 GHz), or by pairing your BB60C spectrum analyzer with this coupler a USB-TG124A (up to 6 GHz).