<span style="font-family: Arial, Helvetica, Sans-Serif; font-size: 12px"><div>Cool. Great report as well. I do love charts, graphs,and statistics!</div>
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<div><span style="font-family: tahoma,arial,sans-serif; font-size: 10pt;"><b>From</b>: "David McKenzie" <dmckenzie@gmail.com><br />
<b>Sent</b>: Monday, May 23, 2016 12:45 PM<br />
<b>To</b>: "144. 450 Mailing List" <450@lists.vhfwiki.com><br />
<b>Subject</b>: [450] ADS-B receiver</span>
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After a few days logging ADS-B and mode-s transponders from aircraft overhead here's how it hears. The antenna is in the attic directly conencted to an "airspy mini" sdr dongle (99 bux, 6ish MHz bandwidth very nice, rx only). It's a homebrew colinear made out of 11cm sticks of rg58. https://i.sli.mg/jpLLLM.png https://i.sli.mg/SqYRri.png The range circles are 20 miles each, red is 30,000ft+, purple is 20k-30k, dark green is 10-20k and light green is under 10k. From inside the attic it can pretty much hear every takeoff and landing at oxford but I lose planes into bradley under about 4000 feet. _______________________________________________ 450 mailing list 450@lists.vhfwiki.com http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450</div></span>