It's a station transmitting with position ambiguity (truncated precision position). The box represents the range of positions that the station could be in given the limited amount of data it transmitted.
http://blog.aprs.fi/2011/01/position-ambiguity-support.html http://www.aprs.org/symbols.html (APRSdos used circles for ambiguity) On Fri, Feb 21, 2020 at 10:05:16AM -0600, we recorded a bogon-computron collision of the <billb...@cal.berkeley.edu> flavor, containing: > Hi, > > In the St. Louis, MO area I see from time to time on my Xastir map (rf only) > a very large rectangle (more than 50 miles in North/South direction) with an > X on the station AC0MW-7.?? The X goes from corner to corner of the > rectangle.?? The X and the rectangle are made of dashes.?? I have been using > APRS since APRSdos and continue to enjoy it.?? The current Xastir map is > shown on my website, www.billbird.com.?? I've tried to discover the answer > on my own but have not been able to. > > Thanks and 73, > > Bill Bird > KG0YJ > _______________________________________________ > Xastir mailing list > Xastir@lists.xastir.org > http://xastir.org/mailman/listinfo/xastir -- Tom Russo KM5VY Tijeras, NM echo "prpv_a'rfg_cnf_har_cvcr" | sed -e 's/_/ /g' | tr [a-m][n-z] [n-z][a-m] _______________________________________________ Xastir mailing list Xastir@lists.xastir.org http://xastir.org/mailman/listinfo/xastir
