WSPR Antenna Testing Methodology oh8stn.org/blog/2017/06/2…
The Smith Chart Enters a New Dimension bit.ly/2uRUqng
Radio project on #Hackadayio detects activity on shortwave channels using #RaspberryPi. bit.ly/22zgob5
WSPR Antenna Testing Methodology oh8stn.org/blog/2017/06/2…
The Smith Chart Enters a New Dimension bit.ly/2uRUqng
As you may have read, the FBI recently arrested 10 (some reports say 11) people accused of being “sleeper agents” for the Russian spy agency. The reports noted that one of the ways that the Russians communicated with these agents is via “numbers stations.”
Here’s a report in Slate magazine that explains how these stations work. It includes audio clips of various numbers stations.