The PL4-23/BF from MCLI is a Power Divider with Frequency 1 to 500 MHz, Insertion Loss 1 dB, Isolation 25 dB, Amplitude Balance 0.2 dB, Phase Balance 2 deg. Tags: Module with Connectors, Lumped Element Power Divider. More details for PL4-23/BF can be seen below.