4SD

4SD, commonly referred to as Channel 4 San Diego (also known as Channel 4 Padres, or COX 4 and originally known as KCOX) is a local origination cable TV channel based in San Diego, California, United States, and is owned and operated by Cox Communications, through its San Diego-based cable television system.

In addition to Cox Communications, 4SD is available on San Diego County's other cable provider, Time Warner Cable. 4SD is not available on DBS providers, DirecTV or Dish Network, nor is it available to IPTV provider, AT&T U-verse. This is because 4SD is distributed via fiber and does not use satellite to uplink its signal, similar to that of CSN Philadelphia. By doing so, they were complying with Cable and Telecommunications Act of 1992 by using the "terrestrial loophole". By using the loophole, Cox was able to avoid making the channel available on DBS or IPTV providers. On January 20, 2010, the FCC voted 4-1, to close the terrestrial loophole. On June 15, 2010, Cox Communications has announced its intentions to negotiate with DirecTV, Dish Network, & AT&T U-verse to license 4SD to those providers.