"Snowbird" wrote in message =
om...
"Bill Padley" wrote in message =
...
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For those thinking of TCAS,
I just took delivery of the first UK import of Surecheck =
trafficscope
VRX..the successor to TPAS...much nicer ....
maybe worth considering instead of TPAS on your shopping list! -its =
out in
the USA already
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http://surecheck.net/five/avionics/vrx/
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Interesting, but I wish the web site had more details about
how it works. For example, how does the built-in-altimeter work?
How does it cope with pressure changes? How does it develop
distance and altitude information on other aircraft? Does
it develop range, too?
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I hope you'll put in a pirep as you get more used to it.
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What concerns me is, when I most want "extra eyes" watching
for me is w/in a few miles of an airport. Yet there can be
5 planes in the vicinity of our airport, heck within 1.5 miles,=20
and none of them a threat to me. I'm afraid when I most need
such a device it would be nothing but a continuous cry of=20
"Wolf! Wolf!"
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Cheers,
Sydney

Sydney:
Regarding "Wolf! Wolf!", I'm on my third iteration of Ryan TCAD.
It scares me now to think of flying into busy areas without it.

I find that my Ryan 9900BX is selective enough about its advisories.
The TCAD does some simple vector prediction to calculate threats.
It doesn't rely solely on proximity.
And if you don't like the factory settings for your protected airspace =
volume,
you can change them.
Also, the TCAD has separate modes for approaches and departures,
both of which further reduce nuisance alarms near airports,
by focusing more on the airspace you're entering than what you're =
vacating.
---JRC---