According to the ARRL, the FCC has adopted changes to the rules governing the use of spread spectrum radio transmissions by US Amateur Radio operators. The rule changes, which take effect April 29, 2011, eliminate the requirement that amateur stations transmitting Spread Spectrum use Automatic Power Control (APC) to reduce transmitter power. This requirement proved […]
Tag Archives: spread spectrum
Shmoocon 2011: intercepting FHSS radio signals
Q, Atlas and Cutaway gave a presentation at the Shmoocon 2011 conference held recently in Washington, DC, concerning interception techniques for Frequency Hopping Spread Spectrum (FHSS) radio signals. They demonstrate the use of low-cost, easily obtained hardware/software to conduct predictive channel hopping analysis coupled with crude spectrum analysis and ultimately identify any given hopping pattern […]