MLAT trial at Dundee
Joined: May 2007
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From: Banished (twice) to the pointless forest
Am I missing something here?
According to the HIAL website, the only scheduled service operating into Dundee is the Loganair from Stansted.
So, very few of that fleet have ADSB.... Really? Stansted and back on Mode C or limited Mode S only?
How many non ADSB airframes do Loganair operate out of Dundee? If very few of them have ADSB, are they planning to change that any time soon?
Joined: Aug 2007
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From: 18nm NE grice 28ft up
Am I missing something here?
According to the HIAL website, the only scheduled service operating into Dundee is the Loganair from Stansted.
So, very few of that fleet have ADSB.... Really? Stansted and back on Mode C or limited Mode S only?
How many non ADSB airframes do Loganair operate out of Dundee? If very few of them have ADSB, are they planning to change that any time soon?
According to the HIAL website, the only scheduled service operating into Dundee is the Loganair from Stansted.
So, very few of that fleet have ADSB.... Really? Stansted and back on Mode C or limited Mode S only?
How many non ADSB airframes do Loganair operate out of Dundee? If very few of them have ADSB, are they planning to change that any time soon?
really? So what are all those GNSS approaches at the HIAL airfields for?
Joined: Aug 2007
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From: 18nm NE grice 28ft up
Edited to add: Maybe Piperboy as well. :-) He's desperate for some traffic to use his gadgets.
Joined: May 1999
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From: UK
Not universally, though: Class B & C, generally where there is a "Mode C veil" now and Class E above 10,000 ft less where at 2500ft or below above the surface, and the Gul of Mexico. See CFR91.225.
Joined: Aug 2007
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From: 18nm NE grice 28ft up
Not universally, though: Class B & C, generally where there is a "Mode C veil" now and Class E above 10,000 ft less where at 2500ft or below above the surface, and the Gul of Mexico. See CFR91.225.
Thread Starter
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From: Glens o' Angus by way of LA
Well attended and informative MLAT presentation last night given by Dundee Tower boss. Quote of the evening goes to DH-H responding to a discussion on ways to keep non transponder aircraft out of CAS
“The only way to guarantee non infringement is with a Bofors”
“The only way to guarantee non infringement is with a Bofors”
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From: 18nm NE grice 28ft up
Hopefully up and running again by 27th.
Thread Starter
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From: Glens o' Angus by way of LA
Not really grasping this technology, I took Tim for a test flight today and I did not see anybody on my Air to Air ADSB IN equipped Garmin GPS bluetoothed to a Garmin GDL 39. Upon landing the guys in the club said they seen all the new devices that were flying on FlightRadar. Do these new units only transmit info to the ground stations but not to other airborne ADSB In receivers?
Joined: Aug 2007
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From: 18nm NE grice 28ft up
Not really grasping this technology, I took Tim for a test flight today and I did not see anybody on my Air to Air ADSB IN equipped Garmin GPS bluetoothed to a Garmin GDL 39. Upon landing the guys in the club said they seen all the new devices that were flying on FlightRadar. Do these new units only transmit info to the ground stations but not to other airborne ADSB In receivers?
Joined: Sep 2007
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From: Woking
I don't know anything about official MLAT tests. but Flightradar24 and the other similar systems use data from large numbers of amateurs around the world.
At LTFC at Fairoaks one of the members, whose aircraft only has Mode S and not ADSB, was complaining that he can't see his aircraft on FR24 (when someone else is using it) until it's quite high up.
We've put in a 1090 receiver at the clubhouse - our simple system consists of a Raspberry Pi, a cheap DVB ADSB dongle and an £18 aerial. It contributes to MLAT calculations as well as sending position info, currently to just FR24. Sadly it turns out that you need four receivers in line of sight to do MLAT, so my colleague's aircraft will stay invisible at low level until other locals join in
Bernie
At LTFC at Fairoaks one of the members, whose aircraft only has Mode S and not ADSB, was complaining that he can't see his aircraft on FR24 (when someone else is using it) until it's quite high up.
We've put in a 1090 receiver at the clubhouse - our simple system consists of a Raspberry Pi, a cheap DVB ADSB dongle and an £18 aerial. It contributes to MLAT calculations as well as sending position info, currently to just FR24. Sadly it turns out that you need four receivers in line of sight to do MLAT, so my colleague's aircraft will stay invisible at low level until other locals join in
Bernie
Joined: May 2007
Posts: 1,555
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From: Banished (twice) to the pointless forest
I don't know anything about official MLAT tests. but Flightradar24 and the other similar systems use data from large numbers of amateurs around the world.
At LTFC at Fairoaks one of the members, whose aircraft only has Mode S and not ADSB, was complaining that he can't see his aircraft on FR24 (when someone else is using it) until it's quite high up.
We've put in a 1090 receiver at the clubhouse - our simple system consists of a Raspberry Pi, a cheap DVB ADSB dongle and an £18 aerial. It contributes to MLAT calculations as well as sending position info, currently to just FR24. Sadly it turns out that you need four receivers in line of sight to do MLAT, so my colleague's aircraft will stay invisible at low level until other locals join in
Bernie
At LTFC at Fairoaks one of the members, whose aircraft only has Mode S and not ADSB, was complaining that he can't see his aircraft on FR24 (when someone else is using it) until it's quite high up.
We've put in a 1090 receiver at the clubhouse - our simple system consists of a Raspberry Pi, a cheap DVB ADSB dongle and an £18 aerial. It contributes to MLAT calculations as well as sending position info, currently to just FR24. Sadly it turns out that you need four receivers in line of sight to do MLAT, so my colleague's aircraft will stay invisible at low level until other locals join in
Bernie
Joined: Sep 2007
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From: Woking
I can't see what we gain. FR24 give us a free business subscription because we supply data, and is free to use. Not sure what use the subscription is, but that's not why we put it there.
I'm entirely open to suggestions, as we only just got this going, but it has to be worth doing.
B
I'm entirely open to suggestions, as we only just got this going, but it has to be worth doing.
B
Joined: May 2007
Posts: 1,555
Likes: 0
From: Banished (twice) to the pointless forest
I can't see what we gain. FR24 give us a free business subscription because we supply data, and is free to use. Not sure what use the subscription is, but that's not why we put it there.
I'm entirely open to suggestions, as we only just got this going, but it has to be worth doing.
B
I'm entirely open to suggestions, as we only just got this going, but it has to be worth doing.
B
Joined: Sep 2007
Posts: 118
Likes: 0
From: Woking
Ah - I see.
The local feed, of course, straight from the RPi, doesn't filter or delay anything. I haven't set it up to do so, but it could be seen by anyone if I fiddled with the router a bit. The input is line of sight, but we can see aircraft as far north as Cambridge and well out over the sea to the south.
Early days as yet, I'm not rushing to change anything, though I am encouraging locally based members to spend the cost of a quarter of an hour in the air to set up their own.
B
The local feed, of course, straight from the RPi, doesn't filter or delay anything. I haven't set it up to do so, but it could be seen by anyone if I fiddled with the router a bit. The input is line of sight, but we can see aircraft as far north as Cambridge and well out over the sea to the south.
Early days as yet, I'm not rushing to change anything, though I am encouraging locally based members to spend the cost of a quarter of an hour in the air to set up their own.
B