Section 74.436 - Special requirements for automatic relay stations(a) An automatic relay station must be designed, installed, and protected so that the transmitter can only be activated or controlled by persons authorized by the licensee.(b) An automatic relay station may accomplish retransmission of the incoming signals by either heterodyne frequency conversion or by modulating the transmitter with the demodulated incoming signals.(c) An automatic relay station transmitter may relay the demodulated incoming signals from one or more receivers.51 FR 4602, Feb. 6, 1986, as amended at 60 FR 55483, Nov. 1, 1995