The PS12-21/NF from MCLI is a Power Divider with Frequency 3100 to 3500 MHz, Insertion Loss 1.5 dB, Isolation 13 dB, Input Power 20 W, Amplitude Balance 1.5 dB. Tags: Module with Connectors, Stripline Power Divider. More details for PS12-21/NF can be seen below.
