I’ve noticed over the last few weeks that I appeared to have had a slightly lower message rate being received than I was seeing previously. I attributed this to the changes in traffic going from summer towards winter, but now I’m not so sure.
Here’s a graph showing the past week, overlaid on the preceding month:
Some weeks ago in @keithma’s thread about raising his antenna several people noticed a sudden brief dip in their stats, and there was quite a lot of speculation about what might have caused it because of the bad weather that day.
I noticed something similar yesterday:
I look at Keith’s graphs and he also has the same dip yesterday across all three of his receivers, which means it is a real effect, not just local to me.
What I’ve also noticed is that the message rate (and message rate per aircraft) has been consistently higher since that point:
Perhaps there was some change to interrogations being made by air traffic control that has resulted in the increased message rate. It’s the second time this has happened coinciding with bad weather, but i don’t think it’s being directly caused by a weather effect as I’ve seen similar conditions at other times with no interruptions like this.
I was wondering if other people near the SE UK have noticed similar.