What is Multicasting?Multicasting is a digital television technology that allows transmission of up to four or more programs simultaneously, free and over the air. Because digital television technology allows much more information to be put into one signal, multiple channels can be transmitted on the same wavelength instead of just one. TV stations will be able to offer more choices of programming, more local channels and high definition (HD). Each separate program stream is called a multicast. For example, channel 8 in your area may offer separate digital programming streams on channels 8.1, 8.2, and 8.3 in the digital band. These programs may include weather and public television programming. Many multicast channels are already offered today. These channels are available free over the air to viewers who own Digital TV sets with a digital tuner. If you don’t have a digital TV, a DTV converter box will allow you to watch multicast channels on your old analog TV.
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