The GPS121 from INSTOCK Wireless Components is a Power Divider with Frequency 1 to 2 GHz, Insertion Loss 1.5 dB, Isolation 18 dB, Input Power 2 to 20 W, Amplitude Balance 0.5 dB. Tags: Module with Connectors, Wilkinson Power Divider, Divider/Combiner. More details for GPS121 can be seen below.