[ARC5] ADS-B versus HF SSB ?

[Brooke Clarke]

Hi Hue:

Can you provide a link to the article?

It's my understanding the GPS satellites tell the GPS receiver in the plane it's coordinates, speed, heading &Etc. and 
that gets broadcast whenever the ADS-B gets a query.  The query to and response from ADS-B are on the W.W.II IFF band 
1030 and 1090 MHz. But there is no satellite for that band.  That's why MH370 was never found.  It's my understanding 
that planes over oceans are NOT tracked as policy.
https://en.wikipedia.org/wiki/Malaysia_Airlines_Flight_370

A friend has an ADS-B system on loan from FlightRadar24 on his roof.  It has a GPS antenna so the receiver knows where 
it is and an ADS-B antenna to pickup those signals.  A high speed LAN internet connection sends that data to Germany 
which in turn posts it to their web page.  This allows you to see all transponding aircraft in real time.  Examples 
start here and scroll down for more:
https://prc68.com/I/Ukiah.shtml#27_June_2019_PGE

-- 
Have Fun,

Brooke Clarke
https://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.

-------- Original Message --------
> I just read an article in the January 25, 2020 WSJ about the Automatic Dependent Surveillance Broadcast  ( "ADS-B" ). It says that now over 100,000 U.S. aircraft now have this
> January 1 mandated equipment installed. Not all classes of aircraft must carry this. This system uses satellites and ground stations to provide GPS locating to the aircraft itself,
> rather than have a ground radar station provide location information. The aircraft - derived information can also be shared with other aircraft.  Over oceans, this allows closing
> the spacing of aircraft from 40 - 80 miles to 14  ( nautical ) miles and would seem to make the old 15 minute position reports a thing of the past.
> So I wonder: for civilian aircraft, does this mean the final end of HF communications?
> -Hue Miller
> Newport, Oregon
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