The COM04L1P-2728-N5N4 from ETL Systems is a Power Divider with Frequency 1000 to 2000 MHz, Insertion Loss 0.4 dB, Isolation 22 dB, Input Power 30 dBm(Combiner) to 43 dBm(Splitter), Amplitude Balance 0.3 dB. Tags: Module With Connectors. More details for COM04L1P-2728-N5N4 can be seen below.