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o STATEMENT OF OWNERSHIP AND OPERATIONS STATE OF WISCONSIN Ameritech Mobile Communications, Inc. (AMCI) is the operational arm for Ameritech Communications of Wisconsin, Inc., the sole general partner in the Milwaukee SMSA Limited Partnership and the Madison SMSA Limited Partnership. The Milwaukee and Madison SMSA Limited Partnership's main business is providing cellular mobile telephone service to the public in the greater southeastern Wisconsin region and their facilities and operations are licensed by the Federal Communications Commission (FCC) and the Federal Aviation Administration. The current Ameritech cellular service area ranges from Portage on the northeast, east to Sheybogan, south through Kenosha County, west to Janesville and Beloit. There are currently 50 cell sites in operation with an additional 20 in various stages of planning and construction. In this instance, Ameritech seeks to construct a "cell", the basic working unit of cellular technology to be located on property commonly known as 1425 Sayles Trail which will consist of a 180' monopole tower with a 17' antenna for a total height of 197' together with an unmanned electronic telephone transmission equipment shelter with approximate dimensions of 12' x 26' x 10' high. AMCI divides a metropolitan service area into a network of cells, each equipped with a low- powered radio transmitter/receiver controlled by a sophisticated computer. Each cell is a vital link between the mobile phones in its geographic area and the telecommunications network of the world. Cellular mobile telephones look very much like regular push-button telephones but with modifications that make them easier to use while driving. Within each phone is a microprocessor chip that controls transmissions and receptions to and from the cells. When the user dials a telephone number and pushes a SEND button on the phone, it signals the nearest cell that a "line" (or radio channel) is desired. The cell instantly connects the phone to an available individual channel and then to our Mobile Telephone Switching Office (MTSO). The MTSO connects the call to the public telephone network, enabling local calls, long distance and even international service. The MTSO is the heart and brain of the system making continuous communication possible even as the subscriber drives through a service area. Its computer continuously monitors the signal strength of all mobile phone calls in progress. If any signal becomes weak as the vehicle travels away from a particular cell's sphere of influence, the MTSO electronically asks nearby cells if any are receiving a stronger signal from that vehicle. If so, the MTSO selects an idle radio channel at the new cell and instructs the mobile phone transmitter-receiver to tune to the new frequency and location. At the same time, the MTSO transfers the call's connections with the public telephone system to the new cell channel. This entire procedure takes less than 0.2 seconds, a time so short that the "hand-off" as it is called, is undetected by the users. They only know that their conversation continues uninterrupted, and that they are hearing each other "clear as a bell". -1-