Special Features:

The hf transmitters are used for point to point communications to ascension island, the system is full-period as well as mission specific; ie hf support for shuttle launch is specifically different from support for a trident d-5 mission

Properties:

A single component specifically designed to generate electrical signals of specific frequency and form, which, when fed to an antenna, will propagate radio frequency electromagnetic waves in space. May include facilities for amplification and/or integral modulator. See also transmitter, radar.