The PL6-4/S1 from MCLI is a Power Divider with Frequency 10 to 1000 MHz, Insertion Loss 2.5 dB, Isolation 22 dB, Amplitude Balance 0.4 dB, Phase Balance 6 deg. Tags: Module with Connectors, Lumped Element Power Divider. More details for PL6-4/S1 can be seen below.