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Updating the APRS post with ADS-B

 Going on 15 years ago, I built an APRS airplane flight tracking tool . It was a lot of fun. I got to watch a variety of acrobatic airplanes via their flight paths and Google Earth. Here's an example. The app has been defunct for several years, first becuase Google cut Google Earth Web API support, and then because I didn't have the time to maintain the APRS screen scraper behind the tool. This week though, I learned about ADS-B , a different airplane tracking RF protocol. With any luck, I'll crank out a demo later this week using CesiumJS and the ADS-B Exchange API .
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Things I Learned: Accessing APRS data via Telnet

 Welp, this took just under a decade.  To access APRS data, which is handy for tracking things like planes. To access  data use  telnet rotate.aprs.net When the sessions opens, type in your user name and -1 as a password to listen only: user <your_callsign> pass -1 And that's it. You'll get a feed that I won't bother you with the details of,  because I don't know them yet : ) Here's the reference . Notice it mentions port 23. That's telnet! Reference for logging files from Microsoft Telnet .
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Today I Learned: RBN mishaps; Google Earth URLs; Google Earth Studio

 How many apparent callsigns can one little ham radio bear? Google Earth on the web has a URL API of sorts, but apparently NO animation! Grrr..... Google Earth's URL stores the initial view of the map like so https://earth.google.com/web/@37.78472548,-122.50134987,111.08460648a,1238.99361831d,35y,-168.52095559h,74.50108975t,0r It may come in hand for doing something involving GUI screen scraping and unit testing  in future projects with the Rockmite ham radio. There's a new callsign in town for the little KD0FNR Rockmite. It's KD0R. So far, I have no  idea how this alias is coming about. Google Earth (at least on the web) doesn't support animation at the moment as far as I can tell. (Sigh, I'm stuck in kepler.gl for that feature for the moment.) Google Earth Studio will apparently support animation though? I hope to find out. For reference, kepler.gl is a nice platform, but I'm more used to working with kml files from back in the day when I had apps tracki...
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