The PL12-4/NF from MCLI is a Power Divider with Frequency 500 to 1500 MHz, Insertion Loss 3.5 dB, Isolation 20 dB, Amplitude Balance 0.6 dB, Phase Balance 9 deg. Tags: Module with Connectors, Lumped Element Power Divider. More details for PL12-4/NF can be seen below.