Mini-Circuits’ BLK-18W-N+ is a coaxial inner DC Block supporting a wide range of applications from 50 MHz to 18 GHz including Ku band test and measurement and more. *Inner DC Block refers to blocking the DC path on the center conductor but not blocking the DC path on the outer ground path. (See Electrical Schematic on page 2.) This model provides low insertion loss, excellent return loss and DC voltage handling up to 200V. The unit features N-Female connector at one end and N-Male connector at the other end and comes housed in a rugged stainless steel body, measuring only 2.07” in length.