Subspace equaliscopic system

A subspace equaliscopic system was a device that jammed subspace communications in a two-parsec radius. It was able to tap directly into the solar wind so that it could operate without the need for a crew. However, the ability to operate unmanned camed to a heavy price: it needed a sublight-only starship with a large solar sail or a large amount of solar panels.

The USS Boston (NCC-572) once attempted to sabotage the test run of the SES conducted by Starfleet. ( video game: "

The Interstellar Concordium Pacification Army operated a SES in the Thuban system, housed in a freighter. It was finally destroyed after more than a century of continuous, unmanned operation, by attack fighters launched by the USS Antechrist (NCC-99153).