A repeater system comprising: a satellite antenna array; a terrestrial antenna; a satellite transceiver coupled to the satellite antenna array; a terrestrial transceiver coupled to the terrestrial antenna; an adaptive null steerer; a pilot signal generator; and a controller communicatively coupled to the pilot signal generator, the adaptive null steerer, the satellite transceiver, and the terrestrial transceiver, and configured to: receive a pilot signal from the pilot signal generator: inject the pilot signal to an input of the terrestrial antenna; receive, via the satellite antenna array, a first downlink signal having a first frequency and a second downlink signal having the first frequency; receive, via the terrestrial antenna, a plurality of terrestrial return link signals from a plurality of user terminals, the plurality of terrestrial return link signals having a second frequency; adaptively steer pattern nulls for the satellite antenna array with the adaptive null steerer to generate a substantially interference-free input signal based on the first and second downlink signals, wherein the adaptive null steerer uses the pilot signal to facilitate the adaptive array steering to create an antenna array pattern with substantially reduced response towards the terrestrial antenna; generate a repeated downlink signal based on the substantially interference-free input signal; multiplex the plurality of terrestrial return link signals into a combined uplink signal; transmit, via the terrestrial transceiver, the repeated downlink signal at the first frequency; and transmit, via the satellite transceiver, the combined uplink signal at the second frequency. a satellite antenna array; a terrestrial antenna; a satellite transceiver coupled to the satellite antenna array; a terrestrial transceiver coupled to the terrestrial antenna; an adaptive null steerer; a pilot signal generator; and a controller communicatively coupled to the pilot signal generator, the adaptive null steerer, the satellite transceiver, and the terrestrial transceiver, and configured to: receive a pilot signal from the pilot signal generator: inject the pilot signal to an input of the terrestrial antenna; receive, via the satellite antenna array, a first downlink signal having a first frequency and a second downlink signal having the first frequency; receive, via the terrestrial antenna, a plurality of terrestrial return link signals from a plurality of user terminals, the plurality of terrestrial return link signals having a second frequency; adaptively steer pattern nulls for the satellite antenna array with the adaptive null steerer to generate a substantially interference-free input signal based on the first and second downlink signals, wherein the adaptive null steerer uses the pilot signal to facilitate the adaptive array steering to create an antenna array pattern with substantially reduced response towards the terrestrial antenna; generate a repeated downlink signal based on the substantially interference-free input signal; multiplex the plurality of terrestrial return link signals into a combined uplink signal; transmit, via the terrestrial transceiver, the repeated downlink signal at the first frequency; and transmit, via the satellite transceiver, the combined uplink signal at the second frequency. inject the pilot signal to an input of the terrestrial antenna; receive, via the satellite antenna array, a first downlink signal having a first frequency and a second downlink signal having the first frequency; receive, via the terrestrial antenna, a plurality of terrestrial return link signals from a plurality of user terminals, the plurality of terrestrial return link signals having a second frequency; adaptively steer pattern nulls for the satellite antenna array with the adaptive null steerer to generate a substantially interference-free input signal based on the first and second downlink signals, wherein the adaptive null steerer uses the pilot signal to facilitate the adaptive array steering to create an antenna array pattern with substantially reduced response towards the terrestrial antenna; generate a repeated downlink signal based on the substantially interference-free input signal; multiplex the plurality of terrestrial return link signals into a combined uplink signal; transmit, via the terrestrial transceiver, the repeated downlink signal at the first frequency; and transmit, via the satellite transceiver, the combined uplink signal at the second frequency.