Fairly simple. The (2m) tracking unit has a small gps that feeds
digital signals to the attached transmitter. The signals include
latitude, longitude, speed, altitude, direction and are picked up by a
host of volunteer ham towers - digital repeaters and/or iGates. That
info is transferred to internet servers and you can easily see the
results on a Google (or other type) map on places like www.findu.com -
simplicity itself for users. I suggest that you pay another $15/yr for
a private website YourPlaneName.com where your relatives or FAA can go
to find the latest tracking.

A lot of automobile users use the system so their wives can tell where
they are (hmm?) . But their signals are often blocked by terrain. The
best performance is from aircraft - any ham digi or igate tower within
couple of hundred miles can see the signal. I have flown cross country
- remote areas - and there is rarely a break in 1 or 2 minute
reporting intervals.

Are you still gawking around. Memorize answers to some 100 ham
questions, pay the $20? fee and get a APRS tracker. It may save your
life.

On Sep 5, 11:32 pm, "Montblack" Y4_NOT!...
wrote:
Interesting...

Bring a Pilot to School Day:

Can you explain how this works, like we're a class of 8th graders? We'll,
7th graders, really. See, 8th grade just started, but we're still reviewing
from last year...

Paul-Mont