This is because it is essentially illegal to work on proprietary VHF/UHF passive radar (you need a government license to talk about your work with foriegners) in the US due to itar laws
That doesn't make it illegal at all. Lots of what SpaceX does is covered by ITAR and they have no issues building rockets.
That doesn't make it illegal at all. Lots of what SpaceX does is covered by ITAR and they have no issues building rockets.