An electronic clipboard with an optional associated remote personal unit worn by a player. The clipboard can include a flat electronic unit with an optionally writeable flat display. The associated unit can be a wrist or other unit with a small display worn by a player. A protective cover can be pulled over the display to protect it during play. Plays from a library of plays, or plays written on the electronic clipboard, can be transmitted by radio to the remote personal unit and displayed. The electronic coach's clipboard that could store and recall images of plays that the coach could carry or have immediately available. Optionally real-time game photographs can be displayed on the coach's electronic clipboard.

 
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> Mobile Communication Method, Base Station and Wireless Line Control Station

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