The DS-409-4SMA from MACOM is a Power Divider with Frequency 10 MHz to 2 GHz, Insertion Loss 0.8 to 1.5 dB, Isolation 15 to 25 dB, Input Power 5 W, Amplitude Balance 0.1 dB. Tags: Module with Connectors. More details for DS-409-4SMA can be seen below.