Rádio e Televisão de Portugal (RTP) is the public service broadcasting organisation of Portugal. It operates four national television channels and three national radio stations, as well as several satellite and cable offerings. The current company dates from 2007, with the merger of two previously separate companies Radiodifusão Portuguesa (RDP; the radio broadcaster) and Radiotelevisão Portuguesa (television broadcaster), although they had been grouped under a single holding company and common branding since 2004.