Geyer Electronic is an electronics manufacturer based out of Germany. 12.92106 refers to one of their products, the 12.92106EZ Active Splitter. This product is a Galileo-capable GNSS antenna splitter, which is a device that splits one high-gain GNSS antenna's signal into multiple outputs, allowing for multiple users to use a single antenna. It also offers an active output, meaning the signal can be attenuated or amplified depending on the user’s requirements. This product is designed to be used in a variety of applications, including drones, surveys, and military operations, and is designed to be resistant to high levels of RF interference.