The SHX-FGZL-4.3/10-XX from Shanghai Huaxiang Computer Communication Engineering is a DC Block with Frequency 100 MHz to 6 GHz, Insertion Loss 0.2 to 0.3 dB, Breakdown Voltage 1000 to 3000 V (DC Voltage), VSWR 1.15:1, 1.25:1, Operating Temperature -45 to 55 Degree C. Tags: Connectorized. More details for SHX-FGZL-4.3/10-XX can be seen below.