Antenna

Info
Antenna increases the amount your tank's Special gauge is filled from dealing damage by a given percent.

Common
+10% more special gained from damage dealt

Rare
+15% more special gained from damage dealt

Epic
+20% more special gained from damage dealt

Strategy
Use an Antenna on tanks that rely heavily on their special attacks to deal damage.

For tanks with specials that do not deal reliable damage or no damage at all, increasing the damage of your tank's primary and secondary attacks will usually be more profitable.