A hybrid diplexer-circulator system, comprising: a circulator including: a first circulator-port communicatively coupled to an antenna; a second circulator-port communicatively coupled to a first chain that comprises a receiver module, the first chain operable to receive first-frequency signals having a first frequency and to reflect second-frequency signals having a second frequency, the first frequency and second frequency being separated by less than five percent of the first frequency; and a third circulator-port communicatively coupled to a second chain that comprises a satellite modem, the second chain operable to receive the second-frequency signals reflected from the first chain, and to transmit third-frequency signals having a third frequency; a modified-diplexer, wherein the first circulator-port of the circulator is shared as a first diplexer-port of the modified-diplexer, the modified-diplexer further comprising: a second diplexer-port in the first chain communicatively coupled to input the first-frequency signals from a filter in the first chain and communicatively coupled to output the first-frequency signals to a receiver in the first chain, a third diplexer-port in the second chain communicatively coupled to: input the second-frequency signals reflected by the first chain, output the second-frequency signals to be received by the satellite modem, input the third-frequency signals transmitted by the satellite modem, and output the third-frequency signals to the third circulator-port. a circulator including: a first circulator-port communicatively coupled to an antenna; a second circulator-port communicatively coupled to a first chain that comprises a receiver module, the first chain operable to receive first-frequency signals having a first frequency and to reflect second-frequency signals having a second frequency, the first frequency and second frequency being separated by less than five percent of the first frequency; and a third circulator-port communicatively coupled to a second chain that comprises a satellite modem, the second chain operable to receive the second-frequency signals reflected from the first chain, and to transmit third-frequency signals having a third frequency; a first circulator-port communicatively coupled to an antenna; a second circulator-port communicatively coupled to a first chain that comprises a receiver module, the first chain operable to receive first-frequency signals having a first frequency and to reflect second-frequency signals having a second frequency, the first frequency and second frequency being separated by less than five percent of the first frequency; and a third circulator-port communicatively coupled to a second chain that comprises a satellite modem, the second chain operable to receive the second-frequency signals reflected from the first chain, and to transmit third-frequency signals having a third frequency; a modified-diplexer, wherein the first circulator-port of the circulator is shared as a first diplexer-port of the modified-diplexer, the modified-diplexer further comprising: a second diplexer-port in the first chain communicatively coupled to input the first-frequency signals from a filter in the first chain and communicatively coupled to output the first-frequency signals to a receiver in the first chain, a third diplexer-port in the second chain communicatively coupled to: input the second-frequency signals reflected by the first chain, output the second-frequency signals to be received by the satellite modem, input the third-frequency signals transmitted by the satellite modem, and output the third-frequency signals to the third circulator-port. a second diplexer-port in the first chain communicatively coupled to input the first-frequency signals from a filter in the first chain and communicatively coupled to output the first-frequency signals to a receiver in the first chain, a third diplexer-port in the second chain communicatively coupled to: input the second-frequency signals reflected by the first chain, output the second-frequency signals to be received by the satellite modem, input the third-frequency signals transmitted by the satellite modem, and output the third-frequency signals to the third circulator-port. input the second-frequency signals reflected by the first chain, output the second-frequency signals to be received by the satellite modem, input the third-frequency signals transmitted by the satellite modem, and output the third-frequency signals to the third circulator-port.