Here is something I realized that the Reneged starship Icarus from Star Trek Renegade as they used a Stealth system. I generated this to add to a ship. Here it is.
Stealth Counter Measure
SU Cost: size + (4 x class)
Power Cost: 30 power per class
A federation technology to get around the need for the cloaking device as it is not really a cloaking device. This system absorbed all the signals and allows only a minimal amount of the single to be transmitted away. At most the sensor readings will look no different than a random anomaly picked up by the sensors. The cloaking device rules apply with the exception that the visual detection is still normal.