Of this use, the constellations of satellites in low earth orbits for personal global telecommunications will probably be the most difficult to circumvent in practice, both because they radiate from the sky and because their basic goal is globally complete coverage . In addition, some governments have chosen to allow market forces to determine policy regarding spectrum usage which if carried to its logical conclusion may severely compromise the future of radio astronomy. A dialogue seems necessary in any case between science ministries and regulatory administrations of governments, and between these and commercial telecommunications companies, if radio astronomy is to remain a practical possibility in the future. If a consensus can be reached, consider organizing a coordinated approach to governments, through the Megascience Forum but not limited to it. Ultimately, a co-ordinated lobbying campaign may be necessary.
Millimetre array telescopes .
There would seem to be scope for international co-operation here and the situation would, on the surface at least, seem very much appropriate for consideration by the Megascience Forum. The WG concluded, however, that the three projects maintain excellent, regular contacts with each other and that discussions are proceeding to minimise unnecessary duplication. Discussions have begun in a number of countries concerning the logical next step in the field, following construction of these millimeter telescopes and completion of the upgrades now being carried out or being planned at many of the current generation of radio facilities. A project has emerged to provide an order of magnitude increase in sensitivity over existing instruments in the centimeter to meter wavelength range. The facility, going by various names in the various countries, is most commonly referred to as the Square Kilometer radio telescope, as it would obtain increased sensitivity by providing a million square meters of collecting area.