The QDB-9K-8000 from Qualwave is a DC Block with Frequency 9 kHz to 8 GHz, Insertion Loss 0.4 dB, Breakdown Voltage 75 V, VSWR 1.25:1, Operating Temperature -35 to 75 Degree C. Tags: Module with Connectors. More details for QDB-9K-8000 can be seen below.