Broadcast translators for commercial stations are normally required to receive a signal from their parent full-service FM station over the air and re-transmit in the region covered by the main station, eliminating the need for a translator except where terrain shielding is a problem). This restriction does not apply to non-commercial educational stations. Any non-commercial station, even one with no local or educational content, can apply for an unlimited number of translators to be fed by any means (including satellite). All take spectrum from local LPFM stations or rebroadcasters of local full-service stations. Existing National Public Radio repeaters were displaced by new religious stations in Lake Charles, Louisiana, losing local and educational content.