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Comet is an American digital broadcast television network owned by the Sinclair Television Group subsidiary of Sinclair Broadcast Group and operated by the MGM Television division of Metro-Goldwyn-Mayer, which focuses on science fiction and supernatural programming.
For communicating with the Deep Space Network, the spacecraft transmitted data across the X-band using a 0.6-meter (2 ft 0 in) parabolic high-gain antenna, medium-gain antenna (MGA) and low-gain antennas (LGA) depending on mission phase, and a 15-watt transponder design originally intended for the Cassini spacecraft. [1]: 32 [16]
Comet 67P with a tail of gas and dust, seen from 162 km (101 mi) 2015. 14 April 2015 – Scientists report that the comet's nucleus has no magnetic field of its own. [97] 2 July 2015 – Scientists report that active pits, related to sinkhole collapses and possibly associated with outbursts, have been found on the comet. [166] [167]
The discone antenna has a useful frequency range of at least 10 to 1. [2] [3] When employed as a transmitting antenna, a properly constructed discone is just as efficient as an antenna designed for a more limited frequency range. The extra bandwidth comes from the controlled taper and large termination radius of the cone.
The category of simple antennas consists of dipoles, monopoles, and loop antennas. Nearly all can be made with a single segment of wire (ignoring the break made in the wire for the feedline connection). [citation needed] Dipoles and monopoles called linear antennas (or straight wire antennas) since their radiating parts lie along a single ...
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