Quadro-transducer shielding system

The quadro-transducer shielding system (QSS) technology was a type of modification to the deflector shields, first successfully used on the Federation Starfleet's starships in the mid-24th century. 


 * Presumably this modification makes use of four transducers, and if it was as successful as the text described, would probably be used on other later 24th century starship classes created by Starfleet.