Spotting military aircraft

[viking9]

Last message probably for Tibo rather than me 

Oops - yes, Sorry Ian.

Tom

[viking9]

Ian,

Have you selected 'View/Chart display options/Beamfinder' and ticked 'Beamfinder labels'. If you do, do you see the radar ident codes in the labels of any non-positional aircraft?

Tom

Yes it it checked.
Where can I see the ident codes in the Aircraft List?

Tibo,

You cannot see the ident codes in the aircraft list but you will be able to see them on the chart.

You must click on the Chart Options icon (blue spanner on green background) and then in the window headed 'Labels'. tick the box 'IID'.  The ID should appear in the label for all aircraft seen by your antenna including non-positional ones shown by mlat sharers.

If you double-click on any aircraft in the chart showing radar ident code then you should see the the beams from that radar head.

Having said that, sometimes the beams take a while to show, sometimes they show as intercepting a different aircraft than that chosen, and sometimes the beams do not show at all.

Tom

[TTECH]

I can see the IID numbers.
In the attachment is a picture of it.

Not very accurate but I have to tweak the radar.txt file.

Regards,
Tibo

[Attachment deleted by Admin to save file space]

[viking9]

Well it looks as if you are doing just as well as I do with my SBS-3.

Tom

[TTECH]

Hmm okay, maybe I am expecting too much of it.

[Radio2.0]

i see a lot "mil" flight but the use only the mil code for there flight. 
And i see some heavy mil aircraft.

[TTECH]

Does anyone know why I am not receiving Alpha Jets that are flying around me?
I am using the R820T dongle on ADS-B/Mode-S.
Maybe they're using Mode-AC?

[Anmer]

Not all aircraft have Mode-S transponders that will transmit data or respond to interrogation requests on 1090 MHz.

[TTECH]

Okay, will there be a way to receive them? Any reason why they don't respond?
Strange that they don't use it as I can receive most of other BAF aircraft.

[Breitling]

Just a little point on that: all interrogation requests are done on 1030 MHz, both mode S and mode A/C. Aircrafts always respond on 1090 MHz, both modes again. We are only able to receive aircraft response messages.

Alpha Jets are old aircrafts equipped with old avionics, sure they are not migrated to mode S. Remember it is not mandatory in Europe until 2020. You can receive them on mode A/C, but all you get is a transponder code and altitude.

[Anmer]

Just a little point on that: all interrogation requests are done on 1030 MHz,

As I said, "respond to interrogation requests on 1090 MHz".  Meaning the resposne is on 1090 MHz.

[TTECH]

Thanks for clearing that up

It seems that the R820T can't receive Mode-AC and Mode-S at the same time?

[Breitling]

Just a little point on that: all interrogation requests are done on 1030 MHz,

As I said, "respond to interrogation requests on 1090 MHz".  Meaning the resposne is on 1090 MHz.

Ok, sorry Anmer. As english is not my mother tongue, maybe it's me failing to get exact meanings at sometimes. I'm pretty sure in ocassions I write down expressions that make you all open wide your eyes   

[Breitling]

It seems that the R820T can't receive Mode-AC and Mode-S at the same time?

Yes it can. I'm doing it now using sergsero's ModeSdeco2 software.

[TTECH]

And is it possible to use it at the same time when using PlanePlotter and Dump1090?
I still want to use Dump1090 as it provides useable raw data with the R820T for PP.