T8B-2014: Amateur satellite operation; Doppler shift, basic orbits, operating protocols; control operator, transmitter power considerations; satellite tracking; digital modes
Who may be the control operator of a station communicating through an amateur satellite or space station?
Any amateur whose license privileges allow them to transmit on the satellite uplink frequency
Only an Amateur Extra Class operator
A General Class licensee or higher licensee who has a satellite operator certification
Only an Amateur Extra Class operator who is also an AMSAT member
How much transmitter power should be used on the uplink frequency of an amateur satellite or space station?
The minimum amount of power needed to complete the contact
The maximum power of your transmitter
No more than half the rating of your linear amplifier
Never more than 1 watt
Which of the following are provided by satellite tracking programs?
All of these answers are correct
Maps showing the real-time position of the satellite track over the earth
The time, azimuth, and elevation of the start, maximum altitude, and end of a pass
The apparent frequency of the satellite transmission, including effects of Doppler shift
Which amateur stations may make contact with an amateur station on the International Space Station using 2 meter and 70 cm band amateur radio frequencies?
Any amateur holding a Technician or higher class license
Only members of amateur radio clubs at NASA facilities
Only the astronaut's family members who are hams
You cannot talk to the ISS on amateur radio frequencies
What is a satellite beacon?
A transmission from a space station that contains information about a satellite
The primary transmit antenna on the satellite
An indicator light that that shows where to point your antenna
A reflective surface on the satellite
Which of the following are inputs to a satellite tracking program?
The Keplerian elements
The weight of the satellite
The last observed time of zero Doppler shift
All of these answers are correct
With regard to satellite communications, what is Doppler shift?
An observed change in signal frequency caused by relative motion between the satellite and the earth station
A change in the satellite orbit
A mode where the satellite receives signals on one band and transmits on another
A special digital communications mode for some satellites
What is meant by the statement that a satellite is operating in mode U/V?
The satellite uplink is in the 70 cm band and the downlink is in the 2 meter band
The satellite uplink is in the 15 meter band and the downlink is in the 10 meter band
The satellite operates using ultraviolet frequencies
The satellite frequencies are usually variable
What causes spin fading when referring to satellite signals?
Rotation of the satellite and its antennas
Circular polarized noise interference radiated from the sun
Doppler shift of the received signal
Interfering signals within the satellite uplink band
What do the initials LEO tell you about an amateur satellite?
The satellite is in a Low Earth Orbit
The satellite battery is in Low Energy Operation mode
The satellite is performing a Lunar Ejection Orbit maneuver
The satellite uses Light Emitting Optics
What is a commonly used method of sending signals to and from a digital satellite?
● = Unseen
● = Weak
● = Review
● = Learned
● = Incorrect answer