Coverage Distribution

Why do I see a circular coverage distribution chart when I view others’ data but not when I view my own? I thought maybe it was because I joined recently, but since then I’ve noticed the circular coverage distribution chart for people joining after I did.

Since the observer location keeps drifting, I’m also wondering if the chart is based on the drifting position or on the real position.

That chart starts to show up after several days, maybe a week, of sending data.

Then why does it show up for a user who joined after I did but not for me?

I read in another post that this chart shows up when you reach 25000 positions reported. So a receiver with many positions received will start showing up faster than one receiver from a “sparser” sky. Mine showed up in a day.

I’m over 25,000 positions now. Maybe it will show up the next full day (so after midnight UTC)?

The site I thought was younger than mibe may be older. I was looking only at month and day. Looks like it’s been operational since Nov. 2013. I didn’t realize the program had been around that long.

Here is a link to the message.

Now it’s showing, and my count is just over 35,000.

I just wish the color choices used in the coverage distribution plot were better. The lightest blue has very poor contrast, quite hard to see.

I bet that’s on purpose to stimulate you to improve your antenna :wink:

A fat lot of good a better antenna does us out in the wilderness where there isn’t a lot of traffic at times. :wink:

I wish the coverage distribution pie (and collection data, for that matter) would be archived so we could see more than the current day (or week, collection data). Any plans to do this?

Ok I add the following wish under the christmas tree :

An animated coverage distribution to be able to see how distribution evolves across days of the week, hours of the day, day of the month, month of the year…

Anyone know how the colour banding on the Coverage Distribution chart works ?

In PP, there is a Signal strength field which I assume generates this data. So for example.

0-10 : Light Blue
11-20 : Blue
21-30 : etc

I have aircraft fly so close to me and the best I get in PP is 70 or so signal strength and lots of light blue on the graph.

Thoughts ?

Pretty sure it is just number of positions.

It is number of positions. If you hover your mouse over the color move information will pop up for that segment.

The colors are just determined by the number of positions. Each block on the chart represents a certain distance range (e.g., 150-200nm) within a certain direction (e.g., SW). If you hover over a specific block on the chart, a pop-up will tell you how many positions were seen in that distance range in that direction.

The color of the block is determined by this number, with the color trending towards a dark red to indicate the regions of heaviest activity and a very light blue to indicate regions of the least activity.

Thank you guys for the quick response.

I have looked at this and have checked my SW position at 100-150 miles and have 40-50% more positions than others in my area however the colour chart is completely different.

Are there other factors ?

Here are screen shots of my PP and two others nearby.

Both of these feeders have similar positions reported (granted 25% of mine S at <50nm) however the remainder should produce different colour schemes. I am PP1 in the above URLs. You can see different colour schemes for the SW position with 3218(PP1), 2314(PP2) and 2431(PP3) positions respectively.

Thoughts ?


Any thoughts ?

Check out my ADSB stats link.

Make sure your home location is set accurately in your planeplotter configuration. That location is used to compute the center of the coverage graph.

Yes, I have checked the location and its set correctly.

Is there a key to the colour wheel ?

ie : 1-2499 positions = Light Blue , 2500-3499 = Blue, etc ?

Can someone please share ?