Are broadcast (over the air) television, cable and satellite programs scrambled with HDCP?
No, HDCP only protects HDMI, DisplayPort, UDI or GVIF interfaces. HDCP is not used to scramble any form of content before it reaches the connection between the Receiver (Set-top box, satellite, antenna). Those signals are on the upstream side of the device. The downstream side (connection between Receiver and TV or other Display) is where HDCP is used.