The 3044-7001-18 from XMA Corporation is a DC Block with Frequency 10 MHz to 18 GHz, Insertion Loss 0.75 dB, Breakdown Voltage 200 V, VSWR 1.35:1, 1.50:1, Operating Temperature -65 to 125 Degree C. Tags: Connectorized, Inner-Outer DC Block. More details for 3044-7001-18 can be seen below.