Total messages?

[airbus340]

Hi

I have been using Airnav for a couple of weeks now and start to learn pretty well how it works, and I just love the software!

There is only one thing I really miss, is it possible to see total messages somewhere?

It would be great to know that number when experimenting with new antennas to see how they perform.

[Runway 31]

You see the total messages on the line to the right of the Real Time Network countdown to update.

Alan

[neroon79]

See Alan's answer.

By the way: there is no direct relation between total message count an number of received airframes.

Sometimes I've a high message count but a lower total number of flight  movements and number of receivedairframes.
Sometimes it's opposit. And sometimes it matches up: higher message count equates higher flight movements and number of received airframes.

Further due to weather and other reasons of the chaotic system "global flight traffic" it's not enough to let the box run for a few hours to determine if one antenna is better then another. If you want do real check you need two (better three) boxes, a month of time and some calculatin skills. Futher you need both antennas set up at the same time.

How to do it:

Week one: Box A on Antenna A, Box B on Antenna A
Week two: Box A on Antenna B, Box B on Antenna A
Week three: Box A on Antenna B, Box B on Antenna B
Week four: Box A on Antenna A, Box B on Antenna B

Write down number of received airframes (count if date is selected im MyFlights browser) and number of flight movements (count in ANRB report) for each box and day of the week.

After you have that date it's time for some statistic calculation that I'll only provide if there is real interest.

Please refer to the attached image to see why a simple change antenna and watch message count won't really work.

Ingo

[airbus340]

Thank you very much for your replies! That is exactly what I am doing, starting to make a graph from today April 1 to keep track of what antenna is better.

I was probably a bit unclear with what I meant with the total messages. I mean from I turn it on to i turn it off, so I can see the total messages for 24 hours, not the message rate per second.

[Runway 31]

airbus340

You will get that if you go to MyLog/Grids and in Quick Set you will get Today/Last 10 minutes/Last Hour/Yesterday/Last Week etc

Don't press All Photos as it will tie up your resources for ages.

Alan

[airbus340]

Thank you very much for your reply Alan!

When I click the My log I can see message count per flight. What I would like to see is the combined message count total for all flights during 24 hours but maybe I would have to use the calculator and add every message together to find out what the total is for 24 hours?
Sorry, no good in explaining as english isn´t my first language...

Let´s say I always have 50 messages per second, that would be 3000 messages per minute and in 24 hours it would be 4 320 000 messages. It is the 4 320 000 messages count I would like to see if it is possible.

Of course I dont have 50 per second all the time but I hope you understand what numbers I talk about.

[Runway 31]

You don't get that anywhere airbus

Alan

[neroon79]

airbus340

out of the blue I got an idea! There is a software named virtual radar server. This software is capable to reed the messages that ANRB software is providing at port 30003 (SBS-1 compatible data stream). You will miss some messages, but this software is summing up the messages it reads from Port 30003 or any other if set up that way.

In the picture you can see the message count of the past few minutes.

Receiver 1: localhost, port 30003, Data from Radarbox
Receiver 2: SBS Port Data Stream on Port 31003 of Raspberry PI with DVB-T RTL-SDR Stick feeding FR24

You can download the program here: http://www.virtualradarserver.co.uk/Files/VirtualRadarSetup.exe

If you need assistance to set up the software just ask.

It's the second best way for your problem, but much better than summing up all receptions of a day by hand.

Ingo

[neroon79]

Hi Alan,

not on the direct way. But there is a quite good way to get that information (See my previous post).

Ingo

[Runway 31]

Cheers Ingo, although total messages sent has nothing to do with how an antenna is performing as the number of aircraft and interrogations will be a determining factor on the number of messages

Alan

[airbus340]

Thank you very much Alan and Ingo!

I have been using VRS before so that is where I got the idea about the total numbers from. I will try to route the messages the way you explain, Ingo, and see how it works.

Many thanks once again!

[neroon79]

Almost right Alan,

with clear line of sight and in closer ranges you are absolutely correct. At the outer edge of reception range were some signals/messages can get close to the noise threshold, a few fractions of a db or a little less noise of an antenna can deliver a few more decodeable messages. These messages will increase the total outgoing message count. But I've still my doubts, that this data (messages per second or total message count per day) is suitable to determine if one antenna is better than the other. The variation of flight movements from day to day is just too high.

A real compair can only be made by using measuring of physical values or maybe by direct comparing as stated in my first reply. Both will be connected with high efforts of time (and money if measuring equipment is used).

Ingo