24 ms·

The TinySA is excellent for finding sources of RFI, although you want to use a small yagi or loop antenna.

cadr 3y ago
I wish I had it when I was having an RFI issue in my neighborhood. I ended up with my RTL-SDR hooked up to my mac with a homemade copper-on-tape-on-cardboard yagi, and I looked like I was a tinfoil hat away from being needing to be put away. Still would have looked nuts with the TinySA, but... less so.
- polishdude20 3y ago
  Did you find the source of the issue?
  - cadr 3y ago
    I narrowed it down to something around my next door neighbor's house. The issue was there was something broadcasting a signal that covered the same range that my car key fob did, so I couldn't lock/unlock my car unless I was right up on it. But the signal was intermittent, and I talked to all the neighbors in all three units, and none had anything that sounded like it could be the culprit. It eventually just stopped happening, so I never tracked it down.
    - PM_me_your_math 3y ago
      [dead]
  - mmvasq 3y ago
    I was attacked quite deliberately in another city and was unable to find the source. It was in a high rise, and GSP with Kismet was marginally useful. Precision was not possible. I was able to stop the rogue attacks with Cisco Meraki. This was extremely beneficial. Since I moved, I have had to change channels a few times due to interference. The dashboards in the Meraki, are great at visualizing and identifying sources. I also made it a point to look ridiculous and walk around to meet the neighbors to understand what is not “rogue” and tell them I was having problems. This was to build an inventory and ensure I didn't accidentally jam something thinking it was a rogue attack. I let them know to inform me if they experienced problems. Clearly someone was sending waves of wireless hackers my way as a poorly defined joke. Despite efforts to get inventory of my surroundings, there are still a ton of unknown devices in the area I cannot identify with precision, and the area is not highly populated. No one knows how many access points and devices they are running any more for smart lights, cams etc. Finding the source as far as I can tell may be more feasible here w GPS receiver - yet I have not had a need.
- mmvasq 3y ago
  Had this issue before and having new more advanced ones now. Gotta say one life saver has been Cisco Meraki’s Air Marshall for detecting at least Bluetooth and WiFi interference. Still hard to tell the source - with just a handful of neighbors there are a ton of unidentifiable devices (just MAC addresses) as the internet of things landscape continues to grow.

cadr 3y ago

I wish I had it when I was having an RFI issue in my neighborhood. I ended up with my RTL-SDR hooked up to my mac with a homemade copper-on-tape-on-cardboard yagi, and I looked like I was a tinfoil hat away from being needing to be put away. Still would have looked nuts with the TinySA, but... less so.

polishdude20 3y ago
Did you find the source of the issue?
- cadr 3y ago
  I narrowed it down to something around my next door neighbor's house. The issue was there was something broadcasting a signal that covered the same range that my car key fob did, so I couldn't lock/unlock my car unless I was right up on it. But the signal was intermittent, and I talked to all the neighbors in all three units, and none had anything that sounded like it could be the culprit. It eventually just stopped happening, so I never tracked it down.
  - PM_me_your_math 3y ago
    [dead]
- mmvasq 3y ago
  I was attacked quite deliberately in another city and was unable to find the source. It was in a high rise, and GSP with Kismet was marginally useful. Precision was not possible. I was able to stop the rogue attacks with Cisco Meraki. This was extremely beneficial. Since I moved, I have had to change channels a few times due to interference. The dashboards in the Meraki, are great at visualizing and identifying sources. I also made it a point to look ridiculous and walk around to meet the neighbors to understand what is not “rogue” and tell them I was having problems. This was to build an inventory and ensure I didn't accidentally jam something thinking it was a rogue attack. I let them know to inform me if they experienced problems. Clearly someone was sending waves of wireless hackers my way as a poorly defined joke. Despite efforts to get inventory of my surroundings, there are still a ton of unknown devices in the area I cannot identify with precision, and the area is not highly populated. No one knows how many access points and devices they are running any more for smart lights, cams etc. Finding the source as far as I can tell may be more feasible here w GPS receiver - yet I have not had a need.
mmvasq 3y ago
Had this issue before and having new more advanced ones now. Gotta say one life saver has been Cisco Meraki’s Air Marshall for detecting at least Bluetooth and WiFi interference. Still hard to tell the source - with just a handful of neighbors there are a ton of unidentifiable devices (just MAC addresses) as the internet of things landscape continues to grow.