E-Link is a high-speed data-link for high altitude balloons. Data transfer rate is 2 Mbit/s duplex. Interfaces for the system are IP/Ethernet.
EBASS is a complete telemetry and telecommand system for the support of balloon flights. The system includes all necessary functions to perform GPS position determination, cut-down on command and cut-down by timers, top valve and ballast machine operations for balloon piloting.
E-TAG is a system for wind measurement before rocket launches at Esrange. It has also been used on larger balloons as a back up measurement of position and as an aid in the recovery of balloon gondolas.