A Type-IX phaser was a type of phaser emitter usually installed on Federation Starfleet starships and space stations.
History[]
This type was developed by Doctor Ejanix at the Level One Development Facility on Wayland Prime in the early 2330s decade.
In the year 2333, a protype was being tested there and used in a demonstration for a number of Starfleet weapons officers, among them Lieutenant Vigo from the USS Stargazer. At the time, this prototype had a maximum effective tactical range of 270.000 kilometers, although Ejanix was hoping to increase that. (STA novel: Three)
By the 2360s, Federation starship classes such as the Centaur-class, Ambassador-class and New Orleans-class were equipped with a number of phaser turrets of this type. When Starfleet began upgrading Deep Space 9's defenses in preparation of a Dominion assault in the early 2370s, turrets of this type were installed in the station's defense sails, along with Type-XI phaser arrays. (DS9 reference: Star Trek: Deep Space Nine Technical Manual)