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Stallions Satellite and Antenna - TV Reception Solutions
Satellite Glossary

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Modulation:  The alteration of a carrier wave in relation to the value of the data being transfered. Analog satellite transmissions use FM modulation. Digital satellite transmission use QPSK modulation.

MPEG:  Moving Pictures Experts Group - international standards organisation which developed the MPEG standard for the digital compression and multiplexing of video and audio signals.

Multiswitch:  Device used to combine and distribute off-air antenna/cable TV signals and DBS satellite signals.

Multicast:  Transmitting information to a select group. For example, sending an E-mail to a mailing list. Teleconferencing and videoconferencing also use multicasting.

Multiplex:  To combine two or more independent signals into one transmission channel, or the combined digital signals transmitted on one satellite transponder.


Near-Video-on-Demand:  Films provided for cable TV or satellite viewers from a menu of titles. The same film starts again after a defined time period, such as every 15 to 30 minutes.

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