The ADB-M-40KMF-I from Atlantic Microwave is a DC Block with Frequency 16 kHz to 40 GHz, Insertion Loss 0.50 to 1.25 dB, Breakdown Voltage 75 V, VSWR 1.30:1, 1.65:1, Operating Temperature -35 to 85 Degree C. Tags: Module with Connectors, Inner DC Block. More details for ADB-M-40KMF-I can be seen below.