By Sandy Antunes
Radio spectrum for commanding and recording from our satellites is a shared source with refined hurdles. We stroll the trail initially paved via AMSATs to debate the stairs and licensing had to arrange and function either a command uplink and a knowledge obtain station and community. learn the way enjoying well with others maximizes your skill to get your information down.
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Additional info for DIY Comms and Control for Amateur Space: Talking and Listening to Your Satellite
Downlink Only At this point, we’re talking about downlink only. The MOC has no control over the data directly; however, actions by the MOC can affect the: 39 • Quality (fidelity) of the measurements • Completeness of the data Data levels are defined as: • MOC has level 0. • SOC may take level 0 and produce either Quicklooks or level 1A. There is an eternal conflict between transmitting all raw data to Earth, or having the satellite select only the best data to transmit down. Onboard processing of the data reduces the telemetry needs and ensures more data is received; sending raw data ensures that the data sent has more information and encourages unexpected data discovery.
You can get and use separate transmission and receiver devices. In principal there is no difference between using separate chips versus a single chip transceiver. However, given that two chips require twice the wiring, twice the power, and twice the time to integrate, we recommend considering this carefully. We will discuss dual-band use shortly. One area where people often use just a remote transmitter is for model rocket recovery. Companies sell tiny battery-powered 21 transmitters that send a constant low-power signal so you can find a model rocket that flies into trees or out of sight.
Electronics of any sort do have a tendency to create radio signals because any moving electric field or current can induce a signal in a long antenna-like wire at a distance. This is the reason Radio 27 for the little FCC tags devices have, as proof that the manufacturer built the device well enough, grounded enough, with an appropriate case, so that the device will not be an accidental source of radio signals or interference. ) are FCC-approved to not spill signal outside of the device itself.
DIY Comms and Control for Amateur Space: Talking and Listening to Your Satellite by Sandy Antunes