RF

Electromagnetic Warfare Is Here

Electromagnetic Warfare Is Here article tells that a briefcase-size radio weapon could wreak havoc in our networked world. In the 2001 action movie Ocean’s Eleven, criminals use an electromagnetic weapon to black out a portion of Las Vegas. It might have seemed to bevVery futuristic at the time, but nowadays the threat is real and

RTL-SDR receives Bluetooth LE

  Sniffing and Decoding NRF24L01+ and Bluetooth LE Packets For Under $30 article points to an interesting hack: able to decode NRF24L01+ and Bluetooth Low Energy protocols using RTL-SDR (=a cheap USB digital TV tuner based digital radio). So cheap practicality anyone can obtain the equipment quickly. Some special hacking was needed because there are

NSA spy gadgets: LOUDAUTO

NSA’s ANT Division Catalog of Exploits for Nearly Every Major Software/Hardware/Firmware is interesting reading on gadgets NSA is claimed to use to spy on you. There was some discussion on Facebook on of those devices were real or not asking for my comments on some of the devices if they are feasible or not. Here

If You Could See Cell Radio Signals

Your smartphone is an amazing piece of technology, but it would be nothing without a cellular network which gives you the ability to text, talk, and browse the web. You may not see most of the massive infrastructure used by your cellphone provider, but it’s there. What If You Could See Your Cellular Network? What

Software defined radio with USB DVB-T stick

Software-defined radio (SDR) has been a hot topic for many years. Software-defined radio (SDR) is a radio communication system where components that have been typically implemented in hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a personal computer or embedded system. There has been many even free

Anti-shoplifting tags teardown

Thixotropy article tells about the technology of anti-shoplifting tags used on store merchandise. They are high-Q tank circuits which if carried between a transmitting and receiving panel at a store’s doorway, they enhance 9 MHz signal propagation between those two panels and the alarm goes off. When a purchase is made, the store clerk deactivates

Shields are your friend, except when…

Shields are your friend, except when… article tells that engineers just love to put shields on circuits, mostly as a defensive measure against signals on the outside getting into and disturbing our circuits, but they also keep signals inside from getting out and this really makes the folks responsible for EMI compliance happy. Even on