Statistics going down


#1

I’ve been feeding to FA since a few weeks now. Since end of October, my statistics show a downward trend. Since about 2 weeks I have started to record data into VRS 24/7.

When I compare the statistics of FA and the output of the VRS database, I see huge differences in the number of flights reported as well as the number of positions.

I assume that there is some selection performed on what message are considered for FA usage, but I would be interested in finding out if you have made the criteria stricter since end of October?

thanks


#2

To save bandwidth, PiAware doesn’t send all positions up, so that number will never match. However, the # of aircraft should definitely match or be very close.

The downward trend on your graph is very strange. We did have a problem on 11-Nov which explains that dip, but the overall trend is nothing something I’ve seen before. Have you made any dump1090 or antenna changes?


#3

I have been doing dump1090 experiments since I noticed the drop. Didn’t do any before that. I’ll have to get up on the garage roof to check the antenna. It’s a DIY colinear inside a plastic pipe. Maybe I have water inside it or something got loose.


#4

Bart,

the reports have been dropping since weeks, that’s most likely something seasonally. To comfort you: I was in the stats on place 8, not really bad. Not much below number 7 but after that it was really a lot behind 6 and higher. My stats dropped significantly but what do we see? I’m number 5 since 2 weeks! This means everyone receives less aircrafts (and i’m less affected).

regarding dbaker’s anser: if we would send every position i would have tens of milllions of reports per day! Very accepteable if fa only accepts reports every 20 seconds…


#5

Im running PP on my desktop system with a Dongle. My flights have went from 700+ per day to 500+. Not sure what happend. Winter flights???


#6

I know our local Class C airport traffic is down at weekends and I’m not surprised to see dips then.