RE: Site information why elevation..

Ted Molczan (
Wed, 9 Jun 1999 16:57:34 -0400

I'll add my $0.02 to the discussion:

A skilled visual observer can measure satellite positions to a precision
approaching 0.01 deg. At a range of 500 km, that is 87 metres. For that
precision to be useful, the observer's position must be known to the same
precision, which makes elevation relevant.

If positional observations are not planned, then very precise co-ordinates
are not required; however, I think it is neat that hobbyists can perform
precision tracking using simple tools.

Ted Molczan