This article is from the TeleVision Receive Only Satellite-TV FAQ, by TVRO Hobbyists drlev@hotmail.com with numerous contributions by others.
Not all channels are available for home viewing. Channels that are not
"in-the-clear" are encrypted. Encryption, often referred to as
scrambling, keeps viewers that are not intended to view a particular
channel from viewing it. The most common use of encryption is to keep
non-paying viewers from accessing subscription or pay per view
programming. Encryption will be discussed in more detail later in this
FAQ.
 
Continue to: