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BTECH tri-band radio hooked up to a external speaker. Bluetooth speaker hooked up to the Raspberry Pi 3. If you own one of the ubiquitous RTL-SDR software defined radio receivers derived from a USB digital TV receiver, one of the first things you may have done with it was to snoop on wide frequency bands using the waterfall view present in most SDR software. Since the VHF and UHF bands the RTL covers are sometimes a little devoid of signals, chances are you homed in upon one of the ISM bands as used by plenty of inexpensive wireless devices for all sorts of mundane control tasks.
Some of these devices, such as car security keys, are protected by rolling encryption schemes to deter would-be attackers. But many of the more harmless devices simply send a command in the open without the barest of encryption. This can be used for example to control wireless home automation devices like alarms and switches. With this method there is no need to analyze the signal, extract the data and replay using a MHz transmitter.
PiTX is open source software which allows you to turn your Raspberry Pi into a general purpose transmitter for any frequency between 5 kHz to MHz. Of course this creates an extremely noisy output which has a significant number of harmonics. So to be legal and safe you must always use bandpass filtering. It can handle frequencies from 5 KHz up to MHz. Before you transmit, know your laws. You are responsible for using your rpitx legally. This acts as the antenna. The optimal lenght of the wire depends the frequency you want to transmit on, but it works with a few centimeters for local testing.
With the advent of cheap software defined radios made popular by the RTL-SDR project a few years back, satellite communications are now within the budget of even the most modest hacker. But by using a 3D printed mandrel, [Tysonpower] has come up with a feed you can build and mount on a standard dish without having to take a crash course in antenna theory.
This project is a software toolkit for remotely eavesdropping video monitors using a Software Defined Radio SDR receiver. It exploits compromising emanations from cables carrying video signals. Raster video is usually transmitted one line of pixels at a time, encoded as a varying current. This generates an electromagnetic wave that can be picked up by an SDR receiver.
The software maps the received field strength of a pixel to a gray-scale shade in real-time. This forms a false colour estimate of the original video signal. The toolkit uses unmodified off-the-shelf hardware which lowers the costs and increases mobility compared to existing solutions. It allows for additional post-processing which improves the signal-to-noise ratio. The attacker does not need to have prior knowledge about the target video display.
All parameters such as resolution and refresh rate are estimated with the aid of the software. Inspiration can come from many places. When [Veronica Valeros] and [Sebastian Garcia] from the MatesLab Hackerspace in Argentina learned that it took [Ai Weiwei] four years to discover his home had been bugged, they decided to have a closer look into some standard audio surveillance devices.
Spy: A modern study of microphone bugs operation and detection talk at 34C3. Salamandra is a tool to find spy microphones that use radio freq to transmit. It uses SDR. But as many new SDR explorers find out, having a receiver is only half the battle: you need an antenna as well.
He shows how you can construct a very capable ADS-B antenna out of little more than an empty soda can and a bit of wire. While most smartphones can receive at least some radio, transmitting radio signals is an entirely different matter. But, if you have an Android phone and a few antennas and a ham radio license it turns out that it is possible to get a respectable software-defined radio on your handset.
It operates on the 10 MHz to 3. CubeSats are tiny satellites which tag along as secondary payloads during launches.
They have to weigh in at under 1. Over CubeSats have been launched over the last few years, with many more launches scheduled in the near future. The dongle picks up the beacon signals sent by the satellites and provides the data to a PC. Due to the motion of the satellites, their beacons can be easily identified by the Doppler shift of the frequency. While the demo only shows basic receiving, much more information on decoding these satellites can be found on the SDR Satellites website.
Picking up the signals and capturing them is easy thanks to the wide availability of USB radios and a program called Dump However, the data is somewhat jumbled and not in a cat-friendly format.
Aircraft determine their position using GPS; and periodically transmit that position along with identity string, altitude, speed etc as ADS-B signals. Cats behave erratically, but generally display their displeasure by jumping on your face. The post describes how we can use open source streaming solutions Apache Kafka , KSQL streaming SQL engine and a Raspberry Pi to process aircraft movements in real-time to determine which plane is upsetting my cat.
Does Antenna Size Matter? Join Shannon Morse and Darren Kitchen as we put our coaxial collinear array to the test! All that and more, this time on Hak5. His experiment was simple enough. He picked up a Baofeng handheld radio transceiver to transmit messages containing a call sign and some speech.
He then used a 0. We used an SDR software defined radio called a HackRF to do the work of interpreting the received signals and then decoded them with some special software. However sadly somethings battered against the CD and cracked it.
So I can't install it. Will be phoning them tomorrow regards this but does anyone know where to download drivers? I have a pretty bad issue with the drivers for this stick. I actually have a Hama stick, but it's identical to the freecom, yakumo and eurostick.. So unless I keep resetting my system to before the driver was installed every time I reboot, the stick is completely useless.
And I am not alone with this issue apparently, I have found a bunch of reports of this online, just never a solution. I also tried every driver I found, to no avail.. Has anyone found any solution for this? I don't understand why the system fails to detect the capture device after the first reboot, and can't even be convinced to look for it after removing the drivers completely.
Basically never try it in a different USB connection from where it had been used during the previous install.
If I take my Yuan PD out of one USB and plug it into another it tries to reinstall and I end up losing BDA functionality so take it from me - remember which port it was plugged into and always ensure you stick with that one at all times!!!
I lose the functionality even when I simply reboot and never remove the stick at all. Tried it on two powerful laptops with an external aerial that works well for other digiboxes.
WandTV detects a few stations but none work well. Screen motion is slow and jumpy. Spend the money and get a decent one from somewhere you can send it back if it doesn't work! Has anyone been able to find working Vista 64bit drivers for this? As usual Freecom support is a load of crap!
I find it strange that so many people have trouble with the Freecom USB stick!
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