[aprssig] "location changes too fast > 500 km/h"

[Keith VE7GDH]

to Hessu OH7LZB

Apparently this was raised a month or so back, but here goes...

It seems that WA5DKW-1 somehow beaconed a position that placed him in
Taiwan. It was suggested that the GPS was manufactured in Taiwan and
had this as its last known position until it figured out where it was.
Subsequent beacons contained the correct position, but looking at
aprs.fi, the bogus Taiwanese location was shown on the map, while the
raw data showed the correct location, but always tagged with
[Location changes too fast (>500 km/h)].

I proved the above by changing the position for VE7GDH-10 to one in
Taiwan and aprs.fi continued to show me in the old (real) location while
the raw data page shows the bogus Taiwanese position that I was
beaconing for the test.

At one point I tried to help by creating an object named WA5DKW-1 slowly
travelling eastward across the Pacific and did indeed manage to move it
away from Taiwan, but didn't keep it up long enough to "get him home".

The problem of course is caused by them beaconing a bogus position in
the first place, but for stations that are using aprs.fi to view their
position, is there a way around this?

73 es cul - Keith VE7GDH
--
"I may be lost, but I know exactly where I am!"