Mode S has several advantages. ATC interrogation pulses can be directed to
a specific aircraft or all Mode S aircraft. Replies to the interrogation
can contain specific information (altitude, aircraft ID and airframe type).
Interrogation to all Mode S aircraft could illicit a reply from my Garmin
GTX 330 that contians my tail # and type and altitude. I don't know if all
of this is currently functional in any or all of the Mode S facilities or
not but this was the original intent.
http://rfdesign.com/military_defense...e_technology/I think that it's a great thought that will give way to ADS-B. TIS is agreat tool also that will probably pass by the wayside. But my 2 or 3 tripsper month into the Dallas Class B are made easier with TIS. FSM where I'mbased had TIS for the first year after I installed the Garmin but theyupgraded the radar (to ASR 11, I believe) and are not going to turn TIS onfor whatever reason.MarkN28409WC5I"Andrew Gideon" wrote in messagenews
an.2006.08.30.23.39.09.697508@gideon. org... On Tue, 29 Aug 2006 23:34:27 -0400, Doug Vetter wrote: The FAA is continuing to invest in Mode-S radars (the ASR-11 is replacing the ASR 7, 8, and 9 units that currently support TIS), so an investmentin the airborne component is still a wise move and will be for MANY years. Aside from TIS, what is the benefit (either to the pilot or ATC) of modeS? - Andrew