a multi - spot transmission and reception system includes at least one outbound section implementing the reception of a hub frequency band and its transposition into user transmission sub - bands , at least one return section implementing the reception of user frequency sub - bands , and their transposition into a hub transmission band and a mesh section comprising a digital transparent processor dtp . the mesh section includes : frequency sampling and recombining means to sample , on user reception sub - bands a mesh band fraction , and to recombine the sampled mesh band fractions on an input of the dtp ; and frequency division and reinjection means to divide the frequency band routed to an output of the dtp , into band fractions , and to reinject the band fractions obtained into the user transmission sub - bands . an application of the system is to repeaters on board telecommunications satellites .