Standard definition (SD) pictures are similar to what you currently see on television but are of a higher quality. Because SD signals use less bandwidth than high definition, it is possible for WHYY to broadcast up to four separate SD programs at the same time.
Standard definition (SD) pictures are similar to what you currently see on television but are of a higher quality. Because SD signals use less bandwidth than high definition, it is possible for WHYY to broadcast up to four separate SD programs at the same time.