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Livecollected on the same radio as the weather passes
ORBCOMM fixes
The ORBCOMM data satellites transmit their own ephemeris on 137 MHz. Decoding the downlink gives their position as they reported it, rather than as a prediction.
- Band
- 137 MHz, same antenna as the weather passes
- Source
- Each satellite's own GPS, straight off the downlink
What the dots are
Satellite trackers draw orbits by propagating published orbital elements, which is a prediction. Each point here is a position a satellite transmitted about itself, received on a wire in a backyard.