Operation Watson was an effort part of the Pathfinder Project in the 24th century. It was the first attempt by Starfleet Communications in 2378 to successfully create a communications link between Earth in the Alpha Quadrant and the USS Voyager, thirty thousand light years away in the Delta Quadrant. The project itself was devised by Harry Kim and Seven of Nine, who coordinated with Reginald Barclay.
It involved bouncing the signal off a quantum singularity using the Mutara Interdimensional Deep Space Array System. In the Delta Quadrant, a phased tachyon beam containing an encoded triaxilating signal was detected. This could sustain a live link for eleven minutes each day.