"A lot" being + 300 for about 1 seconds then - 600 for another half
second to +700 then it will stick for a while, only to go back to very
odd changes. If I read this right I would have had 60 aircraft around
me between 5 to 0 miles and one at just about every altitude.
Occasionally it will resort to showing what appears to be actual
altitude, but I can't tell for sure when it switches. My overall
opinion is that it doesn't seem to be able to "lock" onto any one
particular aircraft, but instead will swing between many, or be
misreading them all together. I flew with it again this evening and
it did basically the same thing, only this time I had a low wing piper
pass directly above me, not more than 100 to 200 feet, and it kept
telling me someone was way below me at "0 NM to 3 NM"

I am starting to think that the ATD-300 is still in a "beta-test"
mode, and perhaps not ready for prime time. I got one of these right
out of the release along with three other guys, and we have all had
about the same results. I am considering trying their competitor
trafficscope while I still have the ATD to see side by side for myself
how they compare in accuracy. I was going to get another competitor
called proxalrt into the ring as well, but the only place that carried
it said they don't keep it in stock.

We'll see.




"James M. Knox" wrote in message ...
(FISHnFLY) wrote in
om:

I couldn't speak for the 200 model to be honest with you. The model I
got is the ATD-300. I watched it closely for a while and it was very
hard to understand what it was tracking. The NM half would show
anywhere between 5 to 0 and the altitude would jump around a lot.

Can you define "a lot"? The range problem is something I would expect.
But the altitude (if there is only one target anywhere near) should be
accurate. Having said that, both your altitude and that of the threat
aircraft can be jumping around by at least 100 feet (for a minimum
"jitter" of a couple of hundred feet).

So... Are you only seeing it "jump around a lot" +/- maybe 300 feet? Or is
the altitude readout REALLY varying massively?

-----------------------------------------------
James M. Knox
TriSoft ph 512-385-0316
1109-A Shady Lane fax 512-366-4331
Austin, Tx 78721
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