The DB-Q1Q25A-50G50V/9XX-9X from Rosnol is a DC Block with Frequency 30 MHz to 50 GHz, Insertion Loss 0.6 dB, Breakdown Voltage 50 V, VSWR 1.25:1, Return Loss 19.08 dB. Tags: Connectorized, Inner DC Block. More details for DB-Q1Q25A-50G50V/9XX-9X can be seen below.