The H-81-4-TNC from MACOM is a Power Divider with Frequency 5 MHz to 1 GHz, Insertion Loss 0.7 to 1.4 dB, Isolation 20 to 25 dB, Amplitude Balance 0.1 dB, Phase Balance 2.5 to 5 Degree. Tags: Module with Connectors. More details for H-81-4-TNC can be seen below.