The 20.500.030-553 from CPE Italia S.p.a. is a RF Connector with Frequency DC to 7.5 GHz, Operating Temperature -55 to 155 Degree C, PIM -155 dBc, Voltage Rating 2700 Vrms, VSWR 1.20:1. Tags: Standard. More details for 20.500.030-553 can be seen below.