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Zone of mutual visibility
The frequency range from ELF to SHF is from below 300 hertz up tohow many gigahertz?
30
What is a non-radiating device called that absorbs the rf and has theimpedance characteristics of the antenna?
Dummy load
What is a small building called that is physically separated from thetransmitter location that contains antenna loading, coupling, and tuningcircuits?
Helix house
Which type of antenna is a special form of a rhombic-arrangedmonopole array that is designed to transmit from a particular location?
Triatic
Communications systems in which portion of the radio frequencyspectrum use line-of-sight propagation?
1 to 10 gigahertz
The distance between microwave system hop points ranges from 50 to150 kilometers (31 to how many statute miles)?
95
The tropo system uses the turbulence in the layer between thetroposphere and the stratosphere to bounce signals back to earth and has atransmission range up to 800 kilometers (how many statute miles)?
500
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