Module 17
Terms
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- Name the freq ranges.
-
VLF-3-30kz
LF 30-300 Kz
MF 300kz 3-mhz
HF 3-30 mhz
VHF 30-300 mhz
UHF 300 mhz-3 ghz
SHF 3-30 ghz
EHF 30-300 ghz - What is the process of eliminating an undesired portion of a signal?
- Suppression
- Reception is known as what?
- When an electromagnetic wave passes through a receiver antenna and iduces a voltage in that antenna
- What is the separation of low freq from high freq known as?
- Detection
- What is the process of croverting electrical signals into sound waves?
- Reproduction
- Balanced phase detector?
- A circuit that controls the oscillator Freq.
- What is fidelity?
- The ability to accurately reproduce at its output the signal at its input
- What is a transmitter?
- Generates an rf carrier, modulates it with intelligence, amplifies it, and applies it to an antenna.
- What is an antenna coupler?
- A device used for impedance mataching between an antenna and a transmitter or receiver.
- What is a receiver?
- Receives electromagnetic energy and converst it to a visible or audible form
- What is a patch panel used for?
- To tie a receiver to transmitter to its associated equipment.
- What is a passive satellite?
- One that reflects radio signals back to earth.
- What is a active satellite?
- One that amplifies the received signal and retransmits it back to earth.
- What is UP Link?
- Freq used to transmit signal from earth to a satellite.
- What is Down Link?
- Freq used to transmit signal from statellite to earth.
- What is it called when the satellite moves at the same speed as the earth?
- synchronous orbit
- What is it called when a satellite is the closest to the earth?
- Perigee
- What is the greatest distance a satellite is to the earth called?
- Apogee
- What is the angle of inclination?
- The angular difference between the equatorial plane of the earth and the plane of the orbit of the satellite.
- What is a polar orbit?
- Orbit that has an angle of inclination of or near 90 degrees.
- What is a medium altitude orbit?
- An orbit from 2000 to 12000 miles above the earth.