4 ms·

I was watching UVB leading up to the war, it was pretty mundane, up to where people in the Estonia / Latvia / Lithuania / Belarus corridor started jamming the c

I was watching UVB leading up to the war, it was pretty mundane, up to where people in the Estonia / Latvia / Lithuania / Belarus corridor started jamming the channel with music or drawing pictures on the SDR heatmaps. Eg: https://www.youtube.com/watch?v=QWFg3i2dNK4 https://www.youtube.com/watch?v=QWFg3i2dNK4 After that it devolved into a popularity contest over who had the strongest transmitter or was geographically closest to SDR recievers. Then kiwisdr got ticked off and stopped letting people do time domain reflectometry to triangulate the signals. My bets are on this new signal being a troll.

great_psy 4y ago
Can you explain a bit how somebody can stop others from trying to triangulate?
- nubinetwork 4y ago
  Kiwisdr maintains the software that is used on the web frontends of their SDRs, they just disabled the feature and (at the time) people couldn't use it anymore. There are other ways to triangulate signals, but that means buying receivers and putting feet on the ground.
- jjtheblunt 4y ago
  what does triangulate mean here? i'm guessing locate.
  - ggm 4y ago
    Yes. From two or more sites plot the intersection of strongest signal radiating pattern, and the centroid is the most likely location of the transmission assuming it's single sourced, and you can plot directionality of the RF. This is called triangulation because at sea you are recommended to get at least 3 points of reference which becomes a "cocked hat" (by visual analogy) to the location being plotted, distances and angles being computed by.. triangulation. The seaborne method is directly analogous to radio signal finding.
    - jjtheblunt 4y ago
      Thank you
computerfriend 4y ago
Why would kiwisdr care?
- nubinetwork 4y ago
  It uses their server.
nullc 4y ago
you mean TDoA not TDR.
- nubinetwork 4y ago
  Yes my mistake, I don't use it very often... I usually only listen. Nice feature though.
64operator 4y ago
They didn't jam anything but the WebSDR receiver.

great_psy 4y ago

Can you explain a bit how somebody can stop others from trying to triangulate?

nubinetwork 4y ago
Kiwisdr maintains the software that is used on the web frontends of their SDRs, they just disabled the feature and (at the time) people couldn't use it anymore. There are other ways to triangulate signals, but that means buying receivers and putting feet on the ground.
jjtheblunt 4y ago
what does triangulate mean here? i'm guessing locate.
- ggm 4y ago
  Yes. From two or more sites plot the intersection of strongest signal radiating pattern, and the centroid is the most likely location of the transmission assuming it's single sourced, and you can plot directionality of the RF. This is called triangulation because at sea you are recommended to get at least 3 points of reference which becomes a "cocked hat" (by visual analogy) to the location being plotted, distances and angles being computed by.. triangulation. The seaborne method is directly analogous to radio signal finding.
  - jjtheblunt 4y ago
    Thank you

computerfriend 4y ago

Why would kiwisdr care?

nubinetwork 4y ago
It uses their server.

nullc 4y ago

you mean TDoA not TDR.

nubinetwork 4y ago
Yes my mistake, I don't use it very often... I usually only listen. Nice feature though.

64operator 4y ago

They didn't jam anything but the WebSDR receiver.