Which component of the Joint Helmet Mounted Cueing System (JHMCS) provides the symbologies projected onto the visor?

The component of the Joint Helmet Mounted Cueing System (JHMCS) that provides the symbologies projected onto the visor is a Cathode Ray Tube (CRT). The CRT is a traditional technology used to display images through the use of electron beams which excite phosphorescent materials on the screen, producing an image. In the context of the JHMCS, the CRT is critical for rendering the necessary flight and targeting data, allowing pilots to support situational awareness and targeting without needing to look inside a cockpit.

While other display technologies provide advancements in various applications—such as High-Definition Displays which offer improved clarity and resolution, and LCD screens that are more compact and energy-efficient—the specific design and purpose of the JHMCS utilize the CRT technology to project relevant symbology effectively within the pilot's line of sight. Optical Fiber Display systems are also used in some advanced display technologies but are not the primary component referenced in the JHMCS for symbology projection.