Michael Jensen, Michael Rice, Tom Nelson, and Adam Anderson coauthored the paper ""Orthogonal Dual-Antenna Transmit Diversity for SOQPSK in Aeronautical Telemetry Channels"" This paper was presented October 20, 2004 at the International Telemetering Conference in San Diego, CA and appears in the Proceedings of the Conference. This paper shows that transmit diversity can be used to overcome self-interference generated by using two transmit antennas in air-to-ground communication links used in flight testing.