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Monthly Archives: November 2011
binning by angle
I was trying to sort a series of polar coordinates by compass direction: everything in the N sector, then NNE, NE, ENE, E, … This is trickier than it looks, since the North sector includes angles between 348.75° and 11.25°. … Continue reading
APRS is go!
Automatic Packet Reporting System — APRS — is rather clever. It’s a way of reporting position, status or messages via the amateur radio 2m band. Data is relayed via digipeaters, and routed to/from the internet APRS-IS system to any user … Continue reading