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Possible Defect running Ubuntu 20.04 w/ OP25
#airspyr2
#firmware
#gnuradio
I'm attempting to get OP25's multi_rx.py decoding multiple channels on a R2 but after running a bit the airspy locks up and doesn't respond to any commands any more. lsusb shows the device is still at
I'm attempting to get OP25's multi_rx.py decoding multiple channels on a R2 but after running a bit the airspy locks up and doesn't respond to any commands any more. lsusb shows the device is still at
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By
carbinefreak@...
· #41601
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
That was VERY nicely handled, Greg. {^_^}
That was VERY nicely handled, Greg. {^_^}
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By
jdow
· #35263
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
You may want to use an attenuated antenna to first obtain a library of patterns while in close proximity of each device. Most EMI receivers utilize a band pass filter to narrow the band width to the f
You may want to use an attenuated antenna to first obtain a library of patterns while in close proximity of each device. Most EMI receivers utilize a band pass filter to narrow the band width to the f
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By
Glen Rhinesmith
· #35262
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
I wrote them a letter explaining that I was a radio hobbyist that lives a few miles from them, and that I was picking up some strong RFI from something in their house that turns on at 7:00 PM every ni
I wrote them a letter explaining that I was a radio hobbyist that lives a few miles from them, and that I was picking up some strong RFI from something in their house that turns on at 7:00 PM every ni
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By
Greg Ella
· #35260
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
Did it take a letter from the FCC or did he listen to you when you gently informed him he was radiating illegal signals. Or has nothing happened at all? {o.o}
Did it take a letter from the FCC or did he listen to you when you gently informed him he was radiating illegal signals. Or has nothing happened at all? {o.o}
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By
jdow
· #35257
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
Future generations of DisplayPort, HDMI, and DVI should all grow an encryption protocol for this reason. Just the same, I still automatically giggle at the idiots who think I'd fall for their claim to
Future generations of DisplayPort, HDMI, and DVI should all grow an encryption protocol for this reason. Just the same, I still automatically giggle at the idiots who think I'd fall for their claim to
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By
jdow
· #35256
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
Um, er, ah, perhaps you should drag open the books that explain some RF reality to you. The first consideration is learning the actual noise characteristics of the environment in which you are working
Um, er, ah, perhaps you should drag open the books that explain some RF reality to you. The first consideration is learning the actual noise characteristics of the environment in which you are working
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By
jdow
· #35255
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
Nathan, I believe they definitely emit some. At least in the case of computer monitors. Great Scott on you tube uploaded a video a few days ago where he demonstrates eaves dropping on a monitors scree
Nathan, I believe they definitely emit some. At least in the case of computer monitors. Great Scott on you tube uploaded a video a few days ago where he demonstrates eaves dropping on a monitors scree
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By
Edward MacDonald
· #35253
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
For the lower end of the HF band, 0.1 to 10 MHz, an amplified loop is a good choice because a dipole would be so big, A lot of appliances radiate up into VHF and UHF, where a smaller directional anten
For the lower end of the HF band, 0.1 to 10 MHz, an amplified loop is a good choice because a dipole would be so big, A lot of appliances radiate up into VHF and UHF, where a smaller directional anten
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By
Greg Ella
· #35252
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
In the 1980s people were picking up emissions from CRT type monitors (all we had) and painting local copies of the screens based on intercepted noise. That is why TEMPEST criteria were invented for mi
In the 1980s people were picking up emissions from CRT type monitors (all we had) and painting local copies of the screens based on intercepted noise. That is why TEMPEST criteria were invented for mi
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By
jdow
· #35251
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
Hello Nathan, Sounds like a very interesting research project and I imagine a LOT of people could learn from your findings! One thought though: you mentioned this research was going to be "EMF noise t
Hello Nathan, Sounds like a very interesting research project and I imagine a LOT of people could learn from your findings! One thought though: you mentioned this research was going to be "EMF noise t
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By
David Ranch
· #35250
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Advice for research project on detecting appliance use from radiated EMF noise
#gnuradio
#airspydiscovery
#experiment
#RTL
Hi all, I am a graduate student currently exploring a new research project on activity recognition within a household setting by sensing when a user turns on or interacts with a particular appliance o
Hi all, I am a graduate student currently exploring a new research project on activity recognition within a household setting by sensing when a user turns on or interacts with a particular appliance o
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By
...
· #35248
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Airspy HF+ Discovery and Spyverter
#hardware
#spyserver
#sdrsharp
#gnuradio
#airspydiscovery
No and abso-damn-lutely no. {^_^}
No and abso-damn-lutely no. {^_^}
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By
jdow
· #32221
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Airspy HF+ Discovery and Spyverter
#hardware
#spyserver
#sdrsharp
#gnuradio
#airspydiscovery
No. The discovery has a much better front-end: More filtering, Higher sensitivity and lower noise figure. If you are already using a Discovery, the only remaining optimization is your antenna.
No. The discovery has a much better front-end: More filtering, Higher sensitivity and lower noise figure. If you are already using a Discovery, the only remaining optimization is your antenna.
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By
prog
· #32218
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Airspy HF+ Discovery and Spyverter
#hardware
#spyserver
#sdrsharp
#gnuradio
#airspydiscovery
Does it make any sense to use Spyverter with Airspy HF+ Discovery? Would it improve HF 15 to 30 MHz receive sensitivity, etc?
Does it make any sense to use Spyverter with Airspy HF+ Discovery? Would it improve HF 15 to 30 MHz receive sensitivity, etc?
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By
Larry Dodd
· #32217
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HOWTO connect to a #spyserver running an AIRSPYHF+ in
#spyserver
#gnuradio
I do not think that there is any way to access a spyserver via gnuradio (yet, maybe someday). Your best bet to access an Airspy HF+ device in gnuradio is via Soapy since there is a driver for that htt
I do not think that there is any way to access a spyserver via gnuradio (yet, maybe someday). Your best bet to access an Airspy HF+ device in gnuradio is via Soapy since there is a driver for that htt
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By
Martin Smith
· #30060
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HOWTO connect to a #spyserver running an AIRSPYHF+ in
#spyserver
#gnuradio
As a Linux user, you should be able to fiddle with makefiles and use a compiler. Here's the first google result I found: https://www.reddit.com/r/RTLSDR/comments/9zaj5l Note that your question is unre
As a Linux user, you should be able to fiddle with makefiles and use a compiler. Here's the first google result I found: https://www.reddit.com/r/RTLSDR/comments/9zaj5l Note that your question is unre
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By
prog
· #30033
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HOWTO connect to a #spyserver running an AIRSPYHF+ in
#spyserver
#gnuradio
I have spent the better part of a full day trying to get this to work, and I am looking for help from anyone that has already succeeded at this. I have tried Ubuntu 16.04LTS, 18.04LTS, and finally 18.
I have spent the better part of a full day trying to get this to work, and I am looking for help from anyone that has already succeeded at this. I have tried Ubuntu 16.04LTS, 18.04LTS, and finally 18.
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By
dhu1342@...
· #30032
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