A proposal by AT&T to improve wireless service on Chappaquiddick by erecting a temporary wireless antenna on the property of Chappy resident Robert Fynbo, the owner of Chappaquiddick Wireless Internet Service Provider , a company he formed to provide broadband Internet wireless service, has the support of Edgartown selectmen, planning board members, public safety officials, and members of the Chappaquiddick wireless committee. On Monday, members of the wireless committee went before selectmen with the outlines of the plan.