12/ more

Nearfield #SIGINT
Until now we stayed rather on the surface with noisy temperature and tyre pressure sensors. Time to refine our commands a bit and seek to exclude some of the noisiest devices later.

Paradoxically this starts with increasing ouput verbosity and suddenly quite different thingies materialize: a marquee sensor, a water leak detector and a power meter.
And here are some codes yearning for analysis.

11/more

#sensor #rtlsdr nearfield #SIGINT
... with a stern, prickly beauty and a sunset over a smalltown suburbia, where I had run away from 50 years ago.
Otherwise we need to descend a bit further down to the protocol level.

10/more

#sensor #rtlsdr nearfield #SIGINT

This is the chip :

"Programmable 64-bit crypt key KeeLoq® code hopping technology, incorporating high + Each transmission is unique security, a small package outline and low cost.""

Righty right. There is this large logistics centre less than 1 Km in line of sight and the other 433 thingie should be a portable bar code machine.

We appreciate all of this and we close tonight's technoromance show ....

9/more

#sensor #rtlsdr nearfield #SIGINT

Enough of weather stations and flat tyres 433 MHz chickenshit. These are two different remote control sytems , each sporting more than one button.
Nice.

OK and they say things like "encrypted" and "tristate code". Need to look into this further, because

ALL YOUR FUQING SENSORS ARE BELONG TO US!

8/more #sensor #rtlsdr #hamradio
nearfield #SIGINT

Here is a flat tyre. Less than a bar. 88 KPa according to Abarth-124 Spider TPMS. Related car should be somewhere in a garage down here in suburbia.

And this is the first recorded example of sensor impostor syndrome. Renault -0345R claiming a vertical acceleration of 295m/s².

π x thumb this should be 30G if my estimate is correct. This is in Gargantuan if not Elonmuskian fraud dimensons.

7/more #sensor #rtlsdr #hamradio
nearfield #SIGINT

Abarth tyre sensors. These are the type of sensors we see amidst the noise of these pesky weather stations. Need to rtfm how to exclude these.

6/ #sensor #rtlsdr #hamradio
nearfield #SIGINT

Fordie was not alone, here is a Toyota tyre plus three other tyres apparently belonging to two different Renaults.

5/more #sensor #rtlsdr #hamradio
and poor man's #SIGINT

Here comes Fordie. Tyre pressure monitoring says at least one of the tyres is okay. And: Fordie is on the move so we possibly won't be seeing him again.
Good luck to your other 3 tyre sensors and watch out on the road!

Btw the cmd to get only °c is

$ rtl_433 -C si

4/more #sensor nearfield #sigint

<diabolic laugh>

ALL YOUR SENSORS ARE BELONG TO US!

</diabolic laugh>

well at least these shitbroadcasting on 433 MHz.

These are all weather stations and affiliated outdoor sensors all blaring out data on 433.920 MHz. No idea who owns these - yet.

Next we got to change this Fahrenheit mess to Celsius. And there are other sensors around, thankfully.

3/more #hamradio #sensor

This is my provisonal shack sporting the slimmest possible set up. A 5 Watt VHF /UHF handheld transceiver connected to OE5XFK in the Mountains of hell, as everybody should know meanwhile.

The fat USB stick is an #rtlsdr, a tiny software defined radio attached to a laptop running #ubuntu #linux 24.04.

And now we go a-hunting, Nearfield #SIGINT starting with a humble bash proggie.

harkank@dellaxo3:~$ rtl_433