The PLH4-37 from MCLI is a Power Divider with Frequency 3000 to 3600 MHz, Insertion Loss 0.5 dB, Isolation 15 dB, Input Power 300 W, Amplitude Balance 0.25 dB. Tags: Module with Connectors, Lumped Element Power Divider. More details for PLH4-37 can be seen below.