scanSydney

I notice from the images above, and the flightradar24 site that it only seems to be Commercial Airliners being displayed. Is this a choice, or because of the type of signal you're using etc?

I'm interested at looking for this for smaller aircraft - helicopters and small fixed wing. I've noticed on the webtrak websites that some of these are displayed. Would I be able to do this with the ADS-B gear above, would I be able to use a scanner with the right software?

Just trying to establish what I could do with different levels of gear.

thanks!

Gday all,
I have noted a few prop ac ie REX and VH-AMR and othe air Amblance / RFDS ac but I have not rxed choppers as yet but I am sure we will rx them while in my rxing area. I dont think you will find a ADS-B software program as yet, the bloke in Melbourne Vic who has the PlaneGadget ADS-B Radar rxing unit, PGR-2 v2.2 for $359 to your door is a nice bloke and the unit is good also. The only issue is the software and it is only my opinion that the gif is no where as good as the AirNav Radarbox but for $200 it would want to be for that price. The PlaneGadget ADS-B Radar unit will do Acars also so that is a good feature. If you are into Acars the program ACARSD is by far the best program out there bar none and it is a huge $0 or free so I would look at using that for Acars only. The AirNav Radarbox and Plane Plotter will do acars but I have not tried it on the Plane Plotter and I am still waiting too hear from others who are using the AirNav Radarbox before I cash up the $200. 73z E=mc2

for those with planeplotter,, my sharecode is "DR"

Howdy

I had heaps of issues with the Plane gadget, the supplied antenna is use less..... and as a package,it is for the casual user
the antenna failed and in the end so did the gadget.. now deaf and useless!

I now use the SBS-1er....

AWESOME.....

I can do 3d google mapping and heaps more, yes twice the price 10 times the quality and features!...
check out a video of a plane landing at williamtown as record and sent to google earth and recorded

http://www.youtube.com/watch?v=AB2hv-xa6ok

Cheers
Mike
http://www.newcastlescan.com

E=MC2 wrote:Gday all,
I have noted a few prop ac ie REX and VH-AMR and othe air Amblance / RFDS ac but I have not rxed choppers as yet but I am sure we will rx them while in my rxing area. I dont think you will find a ADS-B software program as yet, the bloke in Melbourne Vic who has the PlaneGadget ADS-B Radar rxing unit, PGR-2 v2.2 for $359 to your door is a nice bloke and the unit is good also. The only issue is the software and it is only my opinion that the gif is no where as good as the AirNav Radarbox but for $200 it would want to be for that price. The PlaneGadget ADS-B Radar unit will do Acars also so that is a good feature. If you are into Acars the program ACARSD is by far the best program out there bar none and it is a huge $0 or free so I would look at using that for Acars only. The AirNav Radarbox and Plane Plotter will do acars but I have not tried it on the Plane Plotter and I am still waiting too hear from others who are using the AirNav Radarbox before I cash up the $200. 73z E=mc2

inthesmoke wrote:I notice from the images above, and the flightradar24 site that it only seems to be Commercial Airliners being displayed. Is this a choice, or because of the type of signal you're using etc?

I'm interested at looking for this for smaller aircraft - helicopters and small fixed wing. I've noticed on the webtrak websites that some of these are displayed. Would I be able to do this with the ADS-B gear above, would I be able to use a scanner with the right software?

Just trying to establish what I could do with different levels of gear.

thanks!

So what is the go with the smaller aircraft, heliocopters, fixed wing etc?
Why do we see a lot of Regional Express (REX) even though they are just turbo-prop?
Is it because they have Mode-S switched on?
But why not a lot of Qantas or Virgin turboprops
I would assume that we don't see them because they don't have Mode-S or ADS-B?
or it is not switched on?
Or both
Presumably ATC is getting data from Mode-C
Just find it strange that the decoder boxes hear some and not others


Grant

PS Apparently (as I dont fly myself) you need a GNSS system to run ADS-B (GNSS = Global Navigation Satellite System)

Yep.

Webtrak gets its data from the airservices radar system, which is why it can track Mode A and Mode C airplanes.

Any system that you install yourself can only get the location of Mode S transponders that are transmitting ADS-B. And yes, a Mode S ADS-B transmitter requires a certified and TSO'd GPS to get its data from.

So, unless the owner of the "smaller aircraft - helicopters and small fixed wing" has forked out the $15,000 to have a Mode S ADS-B transponder installed, you're out of luck. Webtrak is the only site that will display it.

Mode A, C and S all operate on 1090MHz, so while your receiver can "hear" the Mode A and C pulses, it can't do anything with them and as such ignores them.

Cheers,
Matt

cartman wrote:Wasn't Dick Smith flagging this transmission in general aviation forums as one that needed to be encrypted between users and ATC a year or so back. I am not sure where that discussion went unfortunately.

Grant

The issue Dick Smith raised was that it's trivial to spoof position information in ADS-B. All you need to do is program a transponder you bought off eBay to be the aircraft you want it to be, and feed it whatever position data you like. It'll then happily go off and report that position to ATC.

There is no authentication between ATC and the transponder (well, not in the civilian version of Mode S, it's a different story for the military IFF extensions), and on Australian ATC systems there's apparently no correlation between PSR/SSR returns and the position reported by Mode S, which means the controller isn't alerted if the position reported in Mode S is preposterous according to PSR/SSR returns, which are a hell of a lot harder to spoof.

This will be further compounded in future because AirServices et al plan to not deploy PSR or SSR at all except in terminal areas; they'll have only Mode S interrogators elsewhere. This is because a PSR/SSR installation costs several million dollars, whereas a Mode S interrogator costs about $300k.

The new Airservices Mode S system *is* SSR by definition - it uses a technique called WAM.

Which means Dick was being a bit fast and loose with the truth. Not a huge surprise though

i noticed that Webtrack filters out Polair when they are doing "laps" high above a target ie on a convert role
On Thursday around 9am you could just hear the rotors on the ground while it was going around and around Blacktown at about 6000 feet but no sign of it on Webtrak



Grant