The PS4-57/NF from MCLI is a Power Divider with Frequency 3400 to 4200 MHz, Insertion Loss 0.6 dB, Isolation 19 dB, Input Power 30 W, Amplitude Balance 0.3 dB. Tags: Module with Connectors, Stripline Power Divider. More details for PS4-57/NF can be seen below.