Jackson, Miss.. — Dish has expanded the availability of its broadband service with the launch of DishNet, a high-speed nationwide Internet service via satellite, which began on Oct. 1. For the third time Joe Clayton, CEO of Dish, selected Cowboy Maloney’s Electric City to debut a new digital satellite service, the first being DirecTV in 1994, when Clayton was with RCA and the second was Sirius Satellite Radio in 2002.