The DB-A1A25A-12.4G100V/911 from Rosnol is a DC Block with Frequency DC to 12.4 GHz, Insertion Loss 0.5 dB, Breakdown Voltage 100 V, VSWR 1.25:1, Return Loss 19.1 dB. Tags: Connectorized, Inner DC Block. More details for DB-A1A25A-12.4G100V/911 can be seen below.