Aurora is on version 2.5.0 C#, available at the Aurora Forums.
Contact Erik on the forum for a wiki account.
ECM
Enemy ships with ECM degrade the range of your Fire Controls (but not Active Sensors) by 10% x ECM level. A Fire Control sensor with a range of 30m km targeting a ship with ECM-2 would have only a range of 24m km.
ECM works automatically and does not need to be activated. It protects only the ship it is mounted on, though. Effects do not add up - only one ECM per ship is effective, although you can install more.
An ECM component cannot be designed. As soon as you have finished the research, you'll find a new component available in the ship design window.
The effects of ECM can be offset by ECCM.
There is a research line that allows you to build Compact ECM systems that have the same effects but only a size of 1 HS (50 tons).
Researchable levels: 1-10
Size: 3 HS (150 tons)