Description
Modern Satellite TV systems such as DirecTV have multiple coax feeds from the dish for different polarities. These RF signals feed into a Single Wire Multiswitches, or SWiM system. The Thor F-LB41 systems are designed for distributing satellite service such as DirecTV to many different locations from a single dish array. This system converts each incoming L-Band feed to an independent optical RF channel using a DWDM optics. All four LNB channels are then combined onto a single fiber output through an internal DWDM coupler. Alternately, individual signal outputs can also be used for transport over 4 fibers.
https://www.satellitedish.com/4Polarity%20DWDM.pdf
