The YL-48 from Cobham Advanced Electronic Solutions is a Power Divider with Frequency 4 to 8 GHz, Insertion Loss 0.4 dB, Isolation 18 dB, Input Power 0.4 W, Amplitude Balance 0.3 dB. Tags: Module with Connectors, Wilkinson Power Divider. More details for YL-48 can be seen below.