Signal eradicators functioned as communications scrambling devices. The main topmast, which included a multi-frequency eradicator/scrambler, was integrated into these devices, which were located in the High Council Tower within the Jedi Temple situated on Coruscant. These devices worked by scrambling communications with the Temple, thus thwarting attempts to precisely locate Jedi operatives in the field. In the Battle of Murkhana, Galactic Republic forces utilized S-thread jammers, signal eradicators, and HoloNet chafing devices as part of their equipment.