[aprssig] NE Illinois Balloon Tracks
Lynn W. Deffenbaugh (Mr)
ldeffenb at homeside.to
Thu Jul 23 14:44:36 CDT 2009
Three balloons (or at least, three APRS trackers) were flying over NE
Illinois today. Their APRS infrastructure usage can be viewed at:
(Make sure you look for today's date, these trackers also flew on before)
WB9SKY-11 was heard as far west as Sioux Falls, NW of Duluth, North of
Milwaukee, NE to Flint and Detroit, East to Columbus, and SE to Cincinnati.
KC9POK-11 was almost as bad and worse to the south sending at least on
packet well south of Lexington.
KC9LIG-11 was the most contained (if you can call it that) without the
extremes to the north and south. I'm sure that was just the luck of the
Note that these balloons were using very APRS-abusive paths causing wide
ranging infrastructure activation and 144.390Mhz channel hogging.
Please, balloonists, consult with some local APRS Amateur Radio mentors
before launching transmitters at such altitudes!
If you're going to fly transmitters at balloon altitudes, please
restrict your trackers to no path, or at most a WIDE2-1. You've got
line of sight to everything on the ground, so you really don't need any
digis (certainly not WIDE1 digis) to help deliver your signal.
Lynn (D) - KJ4ERJ - On behalf of the APRS community
PS. The larger the final dash number, the higher the resolution.
You'll need to zoom in to see the details. The files ending in
-D-nn.png are close-ups of the tracked points themselves and do not show
the infrastructure usage. Red lines are direct communications, green
lines are Digi to IGate links. Small red dots are Digis, larger red
dots are IGates.
Feel free to use the images however you would like, but copy them and
republish them. Please do not publish direct links to my server.
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