The UK Department of Trade & Industry really started something when it asked for ideas to use those surplus GHz frequencies that led to the floating of the idea of Personal Communications Networks, and phone companies all around the world now wonder whether the local loop will survive into the 21st century: latest to get the bug is Ameritech Inc, Chicago, which has asked the Federal Communications Commission for permission to test up to 1,000 two-way telephones and 100 cell sites in the 1.85GHz to 1.99GHz band, starting next year.
