GPS antenna mods make Starlink terminal immune to jammers
1–10 of 78 posts
Re: GPS antenna mods make Starlink terminal immune to jammers
#2Question: Would using GPS antenna that only points at the sky (vs more omni-directional ones that mobile devices must have to work in any position) would "fix" the jamming problem ?
Re: GPS antenna mods make Starlink terminal immune to jammers
#3Re: GPS antenna mods make Starlink terminal immune to jammers
#4Question: Would using GPS antenna that only points at the sky (vs more omni-directional ones that mobile devices must have to work in any position) would "fix" the jamming problem ?
That's essentially what he's doing. The patch antenna he's using have a null at the horizon, where ground-based jammers would be.
Re: GPS antenna mods make Starlink terminal immune to jammers
#5>> IMMUNE TO JAMMERS
No. That is not a thing. At most, one can make equipment less susceptible to jamming. Jamming is not like hacking, it isn't a matter of whether an attack works or does not. It cannot be fixed via a patch. Pump out enough energy close enough to the target and even a hyper-directional antenna can be jammed.
Have a look at military GPS jammers. They aren't the little dongles that you can buy online and run off USB battery packs.
Re: GPS antenna mods make Starlink terminal immune to jammers
#6Question: Would using GPS antenna that only points at the sky (vs more omni-directional ones that mobile devices must have to work in any position) would "fix" the jamming problem ?
I can't find it in a quick Google, but I read an article a while back talking about them putting the receivers in foxholes; can see the sky just fine, but any ground-based jammers nearby have to push through the dirt.
Re: GPS antenna mods make Starlink terminal immune to jammers
#7Question: Would using GPS antenna that only points at the sky (vs more omni-directional ones that mobile devices must have to work in any position) would "fix" the jamming problem ?
>> GPS antenna that only points at the sky
On paper. In reality, most every antenna has "side lobes" through which jamming signals can spoil the actual signal. In some cases the more directional an antenna becomes, the more significant are the side lobes.
Re: GPS antenna mods make Starlink terminal immune to jammers
#8https://olegkutkov.me/2023/11/07/connecting-external-gps-ant...
This should be the main link instead of the hackaday article. Fascinating stuff.
Re: GPS antenna mods make Starlink terminal immune to jammers
#9>> IMMUNE TO JAMMERS No. That is not a thing. At most, one can make equipment less susceptible to jamming. Jamming is not like hacking, it isn't a matter of whether an attack works or does not. It cannot be fixed via a patch. Pump out enough energy close enough to the target and even a hyper-directional antenna can be jammed. Have a look at military GPS jammers. They aren't the little dongles that you can buy online…
But how do these jammers work? They can't point at the sky to blind the satellite because there's no receiver; they broadcast from above ground, so in theory putting your receiver in a metal box with the top removed solves the problem?
Re: GPS antenna mods make Starlink terminal immune to jammers
#10>> IMMUNE TO JAMMERS No. That is not a thing. At most, one can make equipment less susceptible to jamming. Jamming is not like hacking, it isn't a matter of whether an attack works or does not. It cannot be fixed via a patch. Pump out enough energy close enough to the target and even a hyper-directional antenna can be jammed. Have a look at military GPS jammers. They aren't the little dongles that you can buy online…
Right, look at the US' current jammer suite, the AN/ALQ-99, while it has issues it's unbelievably powerful. One of the downsides is that it jams the AESA radars of friendlies in the area, including the plane using the jammer itself.
The next gen replacement sounds like an absolute monster too, but without some of the donwsides like the need for a ram air turbine to power it.