The 50DB-077 from JFW Industries is an Inner DC Block that operates from 10 MHz to 18 GHz. It has an insertion loss of less than 0.50 dB and a DC breakdown voltage of 200 volts. This 50-Ohm DC-block can handle an input power of up to 2 W and has a VSWR of less than 1.35:1. It measures 0.94 x 0.35 inches and has an SMA male/female connector.