Declination The offset angle of an antenna from the axis of its polar mount as measured in the meridian plane between the equatorial plane and the antenna main beam. The time it takes for a signal to go from the sending station through the satellite to the receiving station. This transmission delay for a single hop satellite connection is very close on one-quarter of a second. Dielectric Any insulating material between two conductors which permits electrostatic attraction and repulsion to take place across it. The adjustment angle of a polar mount between the polar axis and the plane of a satellite antenna used to aim at the geosynchronous arc.
Declination increases from zero with latitude away from the equator.
Decoder A circuit that restores a signal to its original form after it has been scrambled. Delta Modulation Digital coding system based on the transmission of a change in value, rather than the absolute value of a sample. Demodulation The recovery of baseband information from a modulated carrier. Demodulator A device which extracts the baseband signal from the transmitted carrier wave. The created circuits derived from the bearer circuit.