is a 4-port WDM module for HDO fibre optic CATV link. HDO570 RFoG is a bidirectional module and it combines or divides different wavelengths to and from the common port. HDO570 RFoG supports RF overlay, xPON and RFoG applications. Fibre connectors are located at the front or the rear of the module. The module is installed into HDX installation frame.