This clause has been cited as a significant impediment in efforts to increase coverage for the network, which is available to around 40 per cent of the area's 2.2 million television households. Four Comcast affiliates last year made a bankruptcy filing in an effort to prevent the Astros from retaking their broadcast rights after they were not paid for several months. The Chronicle added that Rockets chief executive Tad Brown has provided an update on his efforts to secure possible investors and additional carriage partners for CSN Houston. Brown said the Rockets held talks with Fox Sports, Time Warner, DirecTV, AT&T, entertainment conglomerate AEG and private equity companies, including KKR & Co., Providence Equity Partners and Guggenheim Partners.