Independent Broadcasting Authority rival Sky Television plc was able to launch an analogue service and intended to overshadow BSB by leasing transponders from Société Européenne des Satellites' RCA Astro-built satellite, Astra 1A. After around a year, the company merged with BSB. The IBA was disbanded as part of the Broadcasting Act 1990, being replaced on New Year's Day 1991 by the Independent Television Commission (ITC) (which also absorbed the Cable Authority), and the Radio Authority (RAu), which have since been merged with other regulators such as Broadcasting Standards Commission (BSC) and Oftel (Office of Telecommunications) to form one regulator, Ofcom. All of the
British Satellite Broadcasting satellite, to provide a commercial service on three of the five DBS channels on 2 April 1986. One of the conditions imposed on applicants by the IBA was that they use a new, untried transmission standard, D-MAC. This standard was part of the European Community's attempt to promote a high-definition television (HDTV) standard being developed by Philips and other European companies, HD-MAC. The technology was still at the laboratory stage and was incompatible with previous standards: HD-MAC transmissions could not be received by existing television sets which were based on PAL or SECAM standards. The condition to use a high-power