On Sun, 30 May 2004 15:28:10 GMT, "Daniel L. Lieberman"
wrote:

I am suggesting that with the new reductions in spacing as time passes more
is likely to be required. If I were to speculate it is possible "for
national security" that the requirements for transponders may be expanded.
Boottom line is I hate to spend money fixing something and then have to
replace it.

What kind of transponder would meet the possible requirements?