The BLK-E653+ from Mini Circuits is a DC Block with Frequency 0.01 to 65 GHz, Insertion Loss 0.6 to 1.3 dB, Breakdown Voltage 16 V, Input Power (Avg) 30 dBm, Return Loss 12 to 22 dB. Tags: Connectorized, Inner DC Block. More details for BLK-E653+ can be seen below.