Abstract: A converter assembly system and method down-converts high frequency communication signals. A first down-converter converts a first input signal to a first intermediate frequency (IF) signal, and a second down-converter converts a second input signal to a second IF signal. A switching assembly, operatively connected to the first and second down-converters, is configured to operate in a first state, in which the first IF signal is routed to a first output and the second IF signal is routed to a second output, and a second state, in which the first and second IF signals are combined into a composite intermediate signal and the composite intermediate signal is routed to at least one of the first output or the second output.