On Sun, 17 Dec 2006 13:59:08 -0500, nonoise
""william_warren_nonoise\"@speakeasy.(nonoise)net " wrote:

FAA reference material that
defines "Space Modulation"

Hi William,

There is no definition because it isn't part of the argot. The point
of my posting is that the Space of Space Modulation is physical space,
an area or volume in the flight path where all signals are targeted.
This is not about mixing, non-linear or otherwise. It is also not
about modulation waveforms except in how they are intercepted and
recognized by existing equipment (and thus giving rise to HMI,
hazardously misleading information).

It is not that there is anything "in" space that is doing any
modulation. There is nothing inherent "about" space that affects
modulation. Space itself does not modulate. There is no modulation
that requires space to complete it (except in the classic sense of
propagation).

There is VOR space.
There is ILS space.
There is TACAN space.
and on and on and on. Each is overlapping modulation in ostensibly
the same space. Thus we have VOR space Modulation....

73's
Richard Clark, KB7QHC