Ian Johnston skrev den 3 Feb 2004 04:55:56 -0800:

I am planning to fit a marine aluminium corner cube into the fuselage
of the Pirat. It's about 12" on each side, very light, and can be
assembled in situ. There more compact reflectors for marine use which
are claimed to have larger radar cross sections, but the emphasis has
to be on "claimed" there.

It'd be interesting to find out what the speed threshold for the doppler
radars typically is. Unfortunately, that is not a piece of information
they go out of their way to make available. The question is, above or
below the speed of a glider in a thermal?

Cheers,
Fred