Keep it lean and only send what the mission needs. First, drop any redundant telemetry—filter out data that can be regenerated on the ground. Then use a high‑efficiency entropy coder like arithmetic or range coding, but tweak it to the channel’s error profile. Pack the data into packets with a small, fixed header and use a sliding window to capture local redundancy; that lets the coder lock onto patterns and squeeze more bits per byte. Finally, if the bandwidth is tight, consider sending a checksum of the whole stream and retransmitting only the delta when errors occur. Stay tight, stay focused, and the link will hold.