The new CW signed up a slew of new affiliates on Tuesday. The network, a joint venture formed from CBS' ( CBS) UPN and Time Warner's ( TWX) WB, said it has signed 30 long-term affiliate agreements that give it coverage in nearly 75% of the nation. When the new network was announced in January, the CW had about 50% broadcasting coverage between various CBS and Tribune ( TRB)-owned stations. UPN and WB had been money-losing enterprises for their parent companies. Leaders hope that by streamlining operations, they can turn the failing networks into one powerhouse. "We're very pleased to sign our first long-term multi-station affiliation agreements with Media General and Raycom Media, two of broadcasting's largest station owners, as well as with Grant Communications and Quincy Newspapers, companies whose strong entrepreneurial spirit is grounded in local station ownership," CW operating chief John Maatta said in a statement. "We're also adding to the number of Banks, Barrington, Belo, Block Communications and Gray stations in the CW fold, as well as sealing new deals with a number of other companies with whom we've previously partnered for The WB." News Corp.'s ( NWS) Fox decided that its stations would go it alone in the new MyTV Network, which has recently signed up some affiliates including a Belo ( BLC) station in Tucson, Ariz. The big push comes just ahead of the annual TV upfront season, when advertisers make commitments to the networks. On Tuesday, shares of CBS closed down 36 cents to $24.42.