A very small aperture terminal, VSAT, for a satellite communication system, comprising: a main reflector having a prime focus; a first feed located at the prime focus of the reflector and in optical communication with the reflector; a frequency-selective surface module having a reflected focus and located at a point along a communication path between the main reflector and the first feed, wherein the frequency-selective surface module is configured to be transparent to a first set of frequencies such that a first signal within a first set of frequencies transmitted on a carrier signal passes through the frequency-selective surface module; and wherein the frequency-selective surface module is configured to be reflective to a second set of frequencies such that a second signal within a second set of frequencies transmitted on a carrier signal is reflected; and a second feed located at the reflected focus of the frequency-selective surface module and in optical communication with the frequency-selective surface module, wherein (i) the first feed is configured to transmit uplink signals within the first set of frequencies and the second feed is configured to receive downlink signals within the second set of frequencies or (ii) the first feed is configured to receive downlink signals within the first set of frequencies and the second feed is configured to transmit uplink signals within the second set of frequencies, and wherein a mounting location of the frequency-selective surface module is adjustable to allow for optimal placement of the frequency-selective surface module within the communication path between the main reflector and the first feed. a main reflector having a prime focus; a first feed located at the prime focus of the reflector and in optical communication with the reflector; a frequency-selective surface module having a reflected focus and located at a point along a communication path between the main reflector and the first feed, wherein the frequency-selective surface module is configured to be transparent to a first set of frequencies such that a first signal within a first set of frequencies transmitted on a carrier signal passes through the frequency-selective surface module; and wherein the frequency-selective surface module is configured to be reflective to a second set of frequencies such that a second signal within a second set of frequencies transmitted on a carrier signal is reflected; and a second feed located at the reflected focus of the frequency-selective surface module and in optical communication with the frequency-selective surface module, wherein (i) the first feed is configured to transmit uplink signals within the first set of frequencies and the second feed is configured to receive downlink signals within the second set of frequencies or (ii) the first feed is configured to receive downlink signals within the first set of frequencies and the second feed is configured to transmit uplink signals within the second set of frequencies, and wherein a mounting location of the frequency-selective surface module is adjustable to allow for optimal placement of the frequency-selective surface module within the communication path between the main reflector and the first feed.