E2A: Amateur radio in space: amateur satellites; orbital mechanics; frequencies and modes; satellite hardware; satellite operations
E2A01:
What is the direction of an ascending pass for an amateur satellite?
From south to north
From west to east
From east to west
From north to south
E2A02:
What is the direction of a descending pass for an amateur satellite?
From north to south
From west to east
From east to west
From south to north
E2A03:
What is the orbital period of a satellite?
The time it takes for a satellite to complete one revolution around the Earth
The point of maximum height of a satellite's orbit
The point of minimum height of a satellite's orbit
The time it takes for a satellite to travel from perigee to apogee
E2A04:
What is meant by the term “mode” as applied to an amateur radio satellite?
The satellite's uplink and downlink frequency bands
The type of signals that can be relayed through the satellite
The satellite's orientation with respect to the Earth
Whether the satellite is in a polar or equatorial orbit
E2A05:
What do the letters in a satellite's mode designator specify?
The uplink and downlink frequencies
Power limits for uplink and downlink transmissions
The location of the ground control station
The polarization of uplink and downlink signals
E2A06:
On what band would a satellite receive signals if it were operating in mode U/V?
432 MHz
144 MHz
50 MHz
28 MHz
E2A07:
Which of the following types of signals can be relayed through a linear transponder?
All these answers are correct
FM and CW
SSB and SSTV
PSK and Packet
E2A08:
What is the primary reason for satellite users to limit their transmit ERP?
Because the satellite transmitter output power is limited
For RF exposure safety
To avoid limiting the signal of the other users
To avoid interfering with terrestrial QSOs
E2A09:
What do the terms L band and S band specify with regard to satellite communications?
The 23 centimeter and 13 centimeter bands
The 2 meter and 70 centimeter bands
FM and Digital Store-and-Forward systems
Which sideband to use
E2A10:
Why may the received signal from an amateur satellite exhibit a rapidly repeating fading effect?
Because the satellite is rotating
Because of ionospheric absorption
Because of the satellite's low orbital altitude
Because of the Doppler effect
E2A11:
What type of antenna can be used to minimize the effects of spin modulation and Faraday rotation?
A circularly polarized antenna
A linearly polarized antenna
An isotropic antenna
A log-periodic dipole array
E2A12:
What is one way to predict the location of a satellite at a given time?
By calculations using the Keplerian elements for the specified satellite
By means of the Doppler data for the specified satellite
By subtracting the mean anomaly from the orbital inclination
By adding the mean anomaly to the orbital inclination
E2A13:
What type of satellite appears to stay in one position in the sky?
Geosynchronous
HEO
Geomagnetic
LEO
E2A14:
What happens to a satellite's transmitted signal due to the Doppler Effect?
The signal frequency shifts lower as the satellite passes overhead
The signal strength is reduced as the satellite passes overhead
The signal frequency shifts higher as the satellite passes overhead
The polarization of the signal continually rotates
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