1. Q: What is a geostationary satellite? ANSWER A satellite that orbits Earth
at approximately 22,300 miles above the equator, completing one orbit in 24
hours, appearing stationary relative to Earth's surface.
2. Q: What does LNB stand for? ANSWER Low Noise Block downconverter. It
receives satellite signals and converts them to lower frequencies for
transmission through coaxial cable.
3. Q: What are the two main frequency bands used for satellite TV? ANSWER
C-band (3.7-4.2 GHz) and Ku-band (11.7-12.7 GHz). Ku-band is most common
for DBS services.
4. Q: What is the Clarke Belt? ANSWER The orbital path approximately 22,300
miles above Earth's equator where geostationary satellites are positioned,
named after Arthur C. Clarke.
5. Q: What is azimuth in satellite alignment? ANSWER The horizontal angle or
compass direction from the installation site to the satellite, measured in
degrees from true north.
6. Q: What is elevation in satellite dish pointing? ANSWER The vertical angle
above the horizon at which the dish must be pointed to receive signals from a
specific satellite.
7. Q: What does DBS stand for? ANSWER Direct Broadcast Satellite, referring
to high-powered satellite systems that transmit directly to small consumer
dishes.
8. Q: What is polarization in satellite transmission? ANSWER The orientation
of the electromagnetic wave, either linear (horizontal/vertical) or circular
(left/right hand), used to double channel capacity.
,9. Q: What is rain fade? ANSWER Signal attenuation or loss caused by heavy
rain, snow, or moisture in the atmosphere between the satellite and receiving
dish.
10. Q: What is the footprint of a satellite? ANSWER The geographic area on
Earth's surface where the satellite's signal can be received with adequate
strength.
11. Q: What is skew angle? ANSWER The rotational adjustment of the LNB to
align with the satellite's polarization angle, varying by geographic location.
12. Q: What is a transponder? ANSWER A device on a satellite that receives
uplink signals, amplifies them, changes their frequency, and retransmits them
back to Earth.
13. Q: What does EIRP stand for? ANSWER Effective Isotropic Radiated Power,
measuring the power density of the satellite signal in a specific direction.
14. Q: What is line of sight in satellite installation? ANSWER An unobstructed
direct path between the satellite dish and the satellite in orbit, essential for
signal reception.
15. Q: What is the purpose of a multi-switch? ANSWER To distribute satellite
signals from multiple LNB outputs to multiple receivers while allowing each
receiver to select any channel.
16. Q: What is orbital spacing? ANSWER The angular separation between
adjacent satellites in the Clarke Belt, typically 2-3 degrees to prevent
interference.
17. Q: What is uplink frequency? ANSWER The frequency used to transmit
signals from Earth stations to the satellite, typically higher than downlink
frequencies.
18. Q: What is downlink frequency? ANSWER The frequency used by satellites
to transmit signals to Earth receiving stations.
19. Q: What does SNR stand for? ANSWER Signal-to-Noise Ratio, measuring
the level of desired signal compared to background noise, expressed in
decibels.
20. Q: What is a spot beam? ANSWER A focused satellite transmission
covering a specific geographic region, providing stronger signals to that area.
, 21. Q: What is CONUS beam? ANSWER Continental United States beam, a
satellite transmission pattern covering the entire continental US.
22. Q: What is the purpose of the feed horn? ANSWER To collect and focus
satellite signals reflected by the dish onto the LNB probe for processing.
23. Q: What is dish gain? ANSWER The ability of a parabolic dish to amplify
received signals, increasing with larger dish diameter.
24. Q: What is free space path loss? ANSWER The reduction in signal strength
as electromagnetic waves travel through space from satellite to Earth.
25. Q: What is the IF frequency range? ANSWER Intermediate Frequency
range, typically 950-2150 MHz, to which the LNB converts satellite signals for
cable transmission.
26. Q: What is a dual LNB? ANSWER An LNB with two independent outputs
allowing connection to two receivers without a switch.
27. Q: What is look angle? ANSWER The combination of azimuth and
elevation angles needed to point a dish at a specific satellite.
28. Q: What causes terrestrial interference? ANSWER Ground-based
microwave transmitters operating on frequencies adjacent to satellite bands,
causing signal disruption.
29. Q: What is the purpose of a dish reflector? ANSWER To collect and focus
weak satellite signals onto the feed horn and LNB, functioning as a parabolic
mirror.
30. Q: What is offset dish design? ANSWER A dish where the feed horn is
positioned below the center, allowing the entire reflector surface to receive
signals without blockage.
31. Q: What is circular polarization? ANSWER A transmission method where
the electromagnetic wave rotates in a helical pattern, either clockwise (right)
or counterclockwise (left).
32. Q: What is linear polarization? ANSWER A transmission method where the
electromagnetic wave oscillates in a single plane, either horizontal or vertical.
33. Q: What is diplexer function? ANSWER A device that combines or
separates satellite signals and off-air antenna signals on a single cable.
at approximately 22,300 miles above the equator, completing one orbit in 24
hours, appearing stationary relative to Earth's surface.
2. Q: What does LNB stand for? ANSWER Low Noise Block downconverter. It
receives satellite signals and converts them to lower frequencies for
transmission through coaxial cable.
3. Q: What are the two main frequency bands used for satellite TV? ANSWER
C-band (3.7-4.2 GHz) and Ku-band (11.7-12.7 GHz). Ku-band is most common
for DBS services.
4. Q: What is the Clarke Belt? ANSWER The orbital path approximately 22,300
miles above Earth's equator where geostationary satellites are positioned,
named after Arthur C. Clarke.
5. Q: What is azimuth in satellite alignment? ANSWER The horizontal angle or
compass direction from the installation site to the satellite, measured in
degrees from true north.
6. Q: What is elevation in satellite dish pointing? ANSWER The vertical angle
above the horizon at which the dish must be pointed to receive signals from a
specific satellite.
7. Q: What does DBS stand for? ANSWER Direct Broadcast Satellite, referring
to high-powered satellite systems that transmit directly to small consumer
dishes.
8. Q: What is polarization in satellite transmission? ANSWER The orientation
of the electromagnetic wave, either linear (horizontal/vertical) or circular
(left/right hand), used to double channel capacity.
,9. Q: What is rain fade? ANSWER Signal attenuation or loss caused by heavy
rain, snow, or moisture in the atmosphere between the satellite and receiving
dish.
10. Q: What is the footprint of a satellite? ANSWER The geographic area on
Earth's surface where the satellite's signal can be received with adequate
strength.
11. Q: What is skew angle? ANSWER The rotational adjustment of the LNB to
align with the satellite's polarization angle, varying by geographic location.
12. Q: What is a transponder? ANSWER A device on a satellite that receives
uplink signals, amplifies them, changes their frequency, and retransmits them
back to Earth.
13. Q: What does EIRP stand for? ANSWER Effective Isotropic Radiated Power,
measuring the power density of the satellite signal in a specific direction.
14. Q: What is line of sight in satellite installation? ANSWER An unobstructed
direct path between the satellite dish and the satellite in orbit, essential for
signal reception.
15. Q: What is the purpose of a multi-switch? ANSWER To distribute satellite
signals from multiple LNB outputs to multiple receivers while allowing each
receiver to select any channel.
16. Q: What is orbital spacing? ANSWER The angular separation between
adjacent satellites in the Clarke Belt, typically 2-3 degrees to prevent
interference.
17. Q: What is uplink frequency? ANSWER The frequency used to transmit
signals from Earth stations to the satellite, typically higher than downlink
frequencies.
18. Q: What is downlink frequency? ANSWER The frequency used by satellites
to transmit signals to Earth receiving stations.
19. Q: What does SNR stand for? ANSWER Signal-to-Noise Ratio, measuring
the level of desired signal compared to background noise, expressed in
decibels.
20. Q: What is a spot beam? ANSWER A focused satellite transmission
covering a specific geographic region, providing stronger signals to that area.
, 21. Q: What is CONUS beam? ANSWER Continental United States beam, a
satellite transmission pattern covering the entire continental US.
22. Q: What is the purpose of the feed horn? ANSWER To collect and focus
satellite signals reflected by the dish onto the LNB probe for processing.
23. Q: What is dish gain? ANSWER The ability of a parabolic dish to amplify
received signals, increasing with larger dish diameter.
24. Q: What is free space path loss? ANSWER The reduction in signal strength
as electromagnetic waves travel through space from satellite to Earth.
25. Q: What is the IF frequency range? ANSWER Intermediate Frequency
range, typically 950-2150 MHz, to which the LNB converts satellite signals for
cable transmission.
26. Q: What is a dual LNB? ANSWER An LNB with two independent outputs
allowing connection to two receivers without a switch.
27. Q: What is look angle? ANSWER The combination of azimuth and
elevation angles needed to point a dish at a specific satellite.
28. Q: What causes terrestrial interference? ANSWER Ground-based
microwave transmitters operating on frequencies adjacent to satellite bands,
causing signal disruption.
29. Q: What is the purpose of a dish reflector? ANSWER To collect and focus
weak satellite signals onto the feed horn and LNB, functioning as a parabolic
mirror.
30. Q: What is offset dish design? ANSWER A dish where the feed horn is
positioned below the center, allowing the entire reflector surface to receive
signals without blockage.
31. Q: What is circular polarization? ANSWER A transmission method where
the electromagnetic wave rotates in a helical pattern, either clockwise (right)
or counterclockwise (left).
32. Q: What is linear polarization? ANSWER A transmission method where the
electromagnetic wave oscillates in a single plane, either horizontal or vertical.
33. Q: What is diplexer function? ANSWER A device that combines or
separates satellite signals and off-air antenna signals on a single cable.
