So why wasn't it popular in the past?
- Sensor Jammer is a good card, but unfortunately it takes up a system slot.
- Not many ships have a system slot.
- Those that do usually get more value out of advanced sensors or fire control system.
- Now if a ship could equip 2 system upgrades i think we would see alot more sensor jammers. Right now for most situations it's the 2nd choice behind Adv Sensors or FCS, so it doesnt see much play (much like many EPT which are overshadowed by Predator or PTL).
Sensor jammer is a fairly limited defensive upgrade for 4 points on ships that generally have some other way to help their defense. Most of your swarm ships focus anyway, which makes it more useful against the kind of actionless(predator, gunner) type builds you tend to see than against the normal ships. That being said, it's still not bad, but it's also the most expensive system upgrade, and there are a lot of powerful effects in the system slot. I've actually seen sensor jammers in play and they really do some work, though. It's interesting that the TLT is something that brings them to the fore now.

