Works with a satellite at any elevation. Just need a clear line of sight between the dish and the satellite.
Most modern windows have materials that reflect energy over a wide frequency range and will greatly attenuate the satellite signals passing through. This will limit the number of transponders that you will reliably receive to only the strongest signals. Replacing the glass with a more RF transparent material would provide better signal quality readings while retaining some barrier to the elements.
Satellite reception through windows has been discussed in several threads. A recent example is Wescopc installing a plexiglass window in his new home.
Brian Gohl
Titanium Satellite