Question
What is meant by the “mode” of an amateur radio satellite?
Answer Options
- A) Whether the satellite is in a low earth or geostationary orbit
- B) The satellite’s uplink and downlink frequency bands
- C) The satellite’s orientation with respect to the Earth
- D) Whether the satellite is in a polar or equatorial orbit
Correct Answer: B
Explanation
In amateur satellite operation, the ‘mode’ of a satellite is a key piece of operational information, acting as a standardized shorthand to quickly convey the essential frequencies required to communicate through it. This designation is critical for operators setting up their radios for a satellite pass.
The mode of an amateur radio satellite specifically indicates the satellite’s uplink (receiving) and downlink (transmitting) frequency bands. For example, Mode V/U indicates the uplink is in the VHF band (2 meters) and the downlink is in the UHF band (70 centimeters). Other letters denote S-band, L-band, etc., providing all necessary frequency band information at a glance.
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