How can they JAM GPS in Plovdiv? Also you don’t need GPS to land a plane, but this could make approach more difficult. Was ILS also jammed?

An amateur radio could build and operate such an equipment. Moreover Bulgarian military electronic production used to produce such in mass: bg.wikipedia.org/wiki/%D0%A1%... so called Hornet.

Press briefing concluded. Fun exchange (paraphrased): "Was the attack aimed at v d Leyen?" "Ask Russia" Thoughts: No new technical details, only vague expressions, but to me it sounds less and less like GPS-jamming and more like something else. audiovisual.ec.europa.eu/en/media/vid...

Every plane can easily land without GPS, as this is only an add-on navi in planes. Most likely the Russki jammed the instrument landing system ILS, 108 MHZ upwards, analog in AM for precision landing. en.wikipedia.org/wiki/Instrum...

apprently (according to a Bulgrian press release quoted by Politico) they switched to ILS

But ILS is the default system for landings on every international airport. And it is much easier to jam than GPS.

Default or not the press release states switch from GNSS to ILS (RNAV to ILS) how is ILS easier to jam compared to GPS ? assuming attacker is not local Note:overpowering a weak GNSS signal from space is easier than overpowering a local ILS transmitter in close proximity of the aircraft landing IMHO

+1 in principle. But it works rather strictly in [theoretical] line of sight. You need an elveated position for jamming, . Looked up ILS, 25 Watts standard, enough++ for nearfield. VHF truck mounted comms stations of the RU army blow up to a few 100 watts VHF. They have shitloads of these... 1/2

... won't suggest that this was the case. But I do think that this presse release omitted some information necessary to understand the matter. Nothing about the 3rd system, the radar guided approach combined with voice guidance by the tower. Also on VHF.

Why would an attacker be hanging around "locally" ? VHF is relatively easy to track, especially high-power, not to mention on a truck with large antenna, vs L1 (GNSS) where you need a small antenna and relative low power, thats assuming local. All this aside, i'm missing reasons why it was not GNSS

same here.

The transponder said ”GNSS is fine” all the way. Thats why. Either they were jammed in another way than usual, not jammed or we have the wrong plane.

1. its the right plane, it was shown arriving on video (see below) 2. ADS-B transponder could have its own GNSS receiver (not sure, don't know the Falcon 900LX) different from the plane's avionics (flying RNAV) with one more susceptible it is curious,yes, but I'm not yet convinced based that alone

Right behind the plane is a radome containing the [active] landing radar [5 GHz afair], the output goes to the ILS ground transmitters and to the tower that can direct the plane via voice. Both these are on VHF.

Convinced of what? I am not not convinced of anything. =D

Would you link the press release?

also the increase in interference reported is interesting, the timing seems off compared to the OO-GPE landing time but not sure how accurate these interference plots are I find the increase and size, including inland Bulgaria rather interesting...

so far only politico and reuters referring to it, didnt dig into finding the actual press release

Uhm.Have to disagree as well. 1.LBPD is ILS on 30 only with no Back Course published. 2.RNP(formerly RNAV) approaches are absolutely used equally in a lot of places,including international airports-and it's the only precision on 12 at LBPD. 3.Even if ILS approach is available RNPs allows(..)

(..)a few tricks including helping with spacing that make them sometimes desirable for ATC, especially if you are a little jet in between airliners AND have priority. And well,if you do an RNP and get spoofed/jammed you switch over to ILS...as they said.

I emailed the EU Commission press contact to ask about plane identity and someone at the briefing did as well. They are not answering, but given the id above i am confident it was OO-GPE: globe.adsbexchange.com?icao=449e05&...

ADS-B analysis is not reliable enough for ground based and targeted Jamming. Terrestrial Sensors are the best solution for that.

Even more technical confusion (likely). Some outlets runs with "radar was jammed" I really hope EU/Bulgaria deliver a transparent incident report with all technical details.

GPS radar. Ok.

Germany's chief of defence was also jammed the hours after von der Leyen, but over Baltic Sea, a jamming hotspot. This one seem a lot less newsworthy, that jammer has been running for years. Begs the question, coordinated comms laying groundwork for action against jamming? =)

Today i think was the first time totally without GPS in the area north of Berlin (Templin) and Szczecin. Absolutely no contact. Bad quality measurments caused by low GPS happen from time to time but today was different. It was dead.

From where and with what equipment? An Apple watch walking? The transponder in a plane? And what do you mean by dead?

Still surprised that it is complicated to locate the source.

Its not, it is extremely easy with the sigint planes circling the transmitters daily. They know exactly where, how, when it is and likely the color of it.

But no action? (The same with IL ships south of Cyprus.)

As cathartic as it would be, I can see why policymakers have yet to lob cruise missiles at St. petersburg.

bsky.app/profile/dutc...

FT (first article on issue?), non-paywall: archive.is/GlmzJ "Disabled GPS nav services at airport" "The whole airport area GPS went dark" "Jet.....was deprived of electronic navigational aids" "circling the airport for an hour...landed using maps" Most of this seem to be Bulgarian officials to FT

Thanks!

Today’s ”von der Leyen was jammed”-story saw (as per usual) way too many very certain people reaching die-hard conclusions, often rooted in pre-conceptions or feelings/opinions. And again a lot of them will be proven wrong. Data is incomplete and the owls are not what they seem.

What do we know so far? I lost track.

EU commission and Bulgarian officials claim plane was jammed and other specifics Open data non-compatible with many of those statements. Might do a better summary tomorrow.

Much appreciated 🙌

Your summary and detail is very good. Thank you.

I’m observing a carefully skeptic position

Does the ICAO not have the authority to intervene in this jamming malarkey?

toothless regulator, like most of these international agencies

Ok Schmettolowski. We’ll just have to accept Russia is trying to cause a civilian air disaster and there’s nothing we can do. 🤷‍♂️

We here in the EU could close the airspace/border to all aircrafts going into Russia/Belarus and force them to take a different route, for example. Would help deal with the problem of Belarus selling desperate people tourist packages and directing them to illegally cross the Polish border.

Not good is it?

This feels like a step change in the pattern of escalation, when you add it to other recent indicators.

We NEED sources and fact checking, there is NO OTHER WAY!

Those outlets just don't have a clue what they are talking about. Just like most people think that the #GPS satellites know where they are.

Nothing interesting in that audiovisual video, apart from 1 thing. She said: "VdL is travelling to Bulgaria to the front" Do they see it already as a front line?

Yeah, right, that was also a peculiar detail.

Maybe the personal attack has an effect on her sluggish responses on crucial topics. She is such a bureaucrat in a war with a stone cold killer

It's clear that Von der Leyen's actions are deeply inimical to Putin's regime. Yesterday, at her border conference, Belarusian officers with long guns appeared behind her. Today, the landing was disrupted. This means she's doing her job well. Perhaps for the same reason, the Eur. right hates her.

In another comment here she is claimed a Russian asset =D