The 920-503J-53P from Amphenol RF is a RF Connector with Frequency DC to 6 GHz, Operating Temperature -45 to 125 Degree C, Power 40 to 120 W, Return Loss 18 to 25 dB, VSWR 1.12:1, 1.29:1. Tags: Standard. More details for 920-503J-53P can be seen below.