Abstract: A method for testing an amplification path of a repeater for a satellite for broadcasting the usable signals, the amplification path making it possible to frequency amplify usable signals from a plurality of communications channels, the channels being situated in a first frequency band, the amplification path being adapted to the first band, wherein the satellite includes a signal generator of a subsystem that enables generation of telemetry data to a second transmission antenna for reception thereof on Earth, the method including defining a test signal that includes the selection of a carrier frequency situated in the first frequency band; configuring the repeater to enable transmission of the signal generated by the signal generator to the amplification path; switching of the test signal amplified via the amplification path to the second transmitting antenna.