GPS above 60,000 ft?

I am investigating a high-altitude project and would like to use GPS for data logging. Most products have an altitude max listed of 60k ft. Does anyone know if this altitude can be exceeded reliably or is there an embedded GPS product that will work up to 100km?

dave

See this thread: viewtopic.php?t=8425

Though I’m not sure how much information I should be divulging to a competing team…

Thanks for the reference. I searched before but missed that recent discussion.