The QDB-80-6000-3K-NNF from Qualwave is a DC Block with Frequency 0.08 to 6 GHz, Insertion Loss 0.25 to 0.35 dB, Breakdown Voltage 3000 V, VSWR 1.15:1, 1.25:1, Operating Temperature -45 to 55 Degree C. Tags: Connectorized. More details for QDB-80-6000-3K-NNF can be seen below.