Quick question on "Daily collection graphs" data


#1

Morning all,

Have PiAware running quite succesfully (c150nm range), with an average 998 flights and 43,675 reports over the last last 3 days.

On the Daily Collection Graphs section, the second graph shows

Reports Received
ADS-B Reports Received

The “Reports receieved” is c30% higher than “ADSB reports received”.

Question is, if those 30% arent adsb reports, what are they?

Just curious… :wink:


#2

They are reports from aircraft that are Mode S equipped, which generally provides identity / callsign / squawk / altitude in response to secondary radar interrogations, but doesn’t spontaneously emit the position or speed information that’s contained in the ADS-B extended squitter messages.

They’re the “positionless” flights on your receiver’s local map table.


#3

Interesting… thanks Obj.

Must say I’m rather enjoying this ADSB lark!

My angle of interest is the tech / pushing the limit - in fact the whole point of my doing this was to:

a)Play with an RPi
b)Play with Linux
c)access the "mysterious signals in the ether"
d)make something cool with a bit of wire and a £20 board

So far, so good! :slight_smile:

Thanks to all at FA and the great community for the support and providing the service etc really supportive and no “anti-noob” elitist vibe which you can get in some places.