The Kremlin the hunt for the demon

Not to say that I was not looking for that demon of a meeting. I waited until he come out and tracked down his lair. Played with it a bit. Then the demon was gone, as usual, on schedule, at 9.00. I calmed down and went about their household chores.

it was the fact that we have in Peter not to find in bookstores workbook in English "planet of knowledge" 3rd grade. Well, as the Union was the deficit. And my wife gave the job — to go to the bookstore in Moscow. They say that in the capital all have aunts on the forum order from there, you pay 500 rubles for the shipping and you take this opportunity to buy myself and save for family. At least some sense of a loser will. I include the Google-map, define the phrase "book stores" and don't understand. Neither red square nor the river, some strange street.

Damn! He got out again! I still only managed to Varvarka walk.

And, obeying the call of nature, I have uncovered his weapon again.

Epigraph

Every hunter wants to know where sits the pheasant.
Folk mnemonic for physics

the We feel, even nice to be frightened. Not because fear alerts us to real danger or to take some action against her, but because he makes our experience is unusually intense.
Corey Robin. "Fear. History of political ideas"

While uncover — I think so.

He's a dog, prevents me to live, to perform simple household need. And all these tourists up to the China town square is also a hindrance. And those guys who are on the Kremlin embankment got in an accident also prevents. And runners, taxi drivers, and their passengers. And many people that I don't remember. And who do we have in Russia is responsible for radio frequency? Everything was so clean, without interference. Think GRCC is called, the Main Radiochastotnyi Center. And it has website — http://www.grfc.ru/grfc/. And he's maybe a mass complaint, for example, people in the Internet to verify the presence of the demon and find it, but does not. As well as the President will ask the next straight line, who is a nightmare for its population. But I Radiochastotnyi these Centers can understand. They on the nose the powerful in the event the place is nice, outdoors — Facilities Forum. The autumn season, a holiday romance and all that. Will discuss there the purity of the spectrum and with new strength for the work. Oh, where are my sixteen years.

I won't wait and still uncover, as the adrenaline off.
Where I can catch a live demon, how not at Home? Here we take Europe — boring live, poor guy. Settle, you might say, rubber demons, benefit cost cheap. True some of them here so do not walk the streets. And if you sneak, then quickly and hiding, that God forbid did not notice.

my Weapon looks like this:

About its internal structure you can read my previous article.

Now I can only tell you about the cable. It seems unsightly to look at, but it goes as high as 5 GHz.

direction Finder connects to the tablet via USB3, and his demands on the quality of cable is quite serious. Fortunately the cable I have is not very long, I pick up the pieces is a simple twisted pair UTP and connect the type A connector with a connector C. On the finder is type C, since it is impossible to greatly increase thickness, will be ugly. It turns out that such a twist all the colors of the rainbow. And most importantly — it is necessary to add a separate earthen wires in the strand. One, for example, to the length of the USB interface produces an error and communication cost.

On the side A very simple matter.

let us Return to our hero, yet you don't get bored. Different mobile devices react to the demon much different. I have had the Samsung Duos and the Lenovo 2 Pro Phab (star of the future articles about the AR-finders). Samsung even close to a demon rarely flew in Vnukovo. He just could not find a navigation solution. GPSTest screen it looked like this:

it is noteworthy that the value of the SNR (SNR) of about 50 dB in this smartphone doesn't happen at all. Losses in the antenna of this device lead to a fairly large system noise (System Noise Floor). When I open the sky saw only 40 dB. And this is one of the signs of the coming of the demon observed in conventional mobile devices.

it should be noted that, along with the fake companions, accepted and real. They have a SNR (SNR) is significantly less. The right screenshot is cleared under the Moskvoretsky bridge, so there is only one real companion, but the other (fake) are accepted as if they were all in my pocket.

But more than a new gadget — Lenovo Phab 2 Pro stupid shows Vnukovo:

Here in this gadget I put a SIM card in Moscow and planning to normally navigate in Moscow. But ...

Let's look at the spectrum of a demon. Below the video you will see it on the right vertically. I unfolded the picture to make it clearer.

first, demon horn Central harmonic signal, which apparently needs to score receivers to worse, they took these satellites. Below 20 dB is already the body of a demon wide signal which simulates a satellite.

Feel that you've warmed up, let's get to the main dish. Since the direction finder is built on augmented reality, I suggest just watch a couple of videos from the battlefield.

first I come down in the Park Zaryadye, which are washed from construction dirt. That's why my shoes are so dirty.

second I walk along the Kremlin embankment.

I have read the article on Medusa and I see no reason not to believe the authors. Our colleagues found a demon there, then there he was.

it Just moved.

PS
Maybe my Phab 2 Pro so stuck, but I saw that the demon was gone until 10.30, exactly. And it was already near the hackspace Neuron on Khokhlovskoye. I am surprised and outraged by how far he hits it. Why? Also I suspect the demon in the formalism. Why is he turned on and off at points in time that are multiples of an hour or half hour? This is not good. The demon, it would be necessary to keep the population.

Article based on information from habrahabr.ru