How can one of the headend channels be suppressed in one downlead, but still remain in the other downlead?
Through the use of an adjacent channel combiner ref. 5254.
This element permits a current DC bypass between its inputs, but still maintains a high isolation for the radio frequency
To further suppress the channel in the corresponding downlead, the notch filter ref. 4162/72 can be used.
This device cannot only eliminate one channel, it can also eliminate any channel or channels that are connected to the inputs of the adjacent channel combiner.