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Comment by xradionut | Hacker News Reader

Amateur radio can be rewarding. You can build radios/antennas, explore physics, yak with folks around the world without internet/telecom companies or do public service. Current nifty ham technology is SDR, (Software Defined Radio).

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Just because you mentioned the internet and "everything must be connected with Snowden," I wonder if the NSA is tapping all short-wave comms? You'd think yes, because that is what spooks on all sides used for encoded messages. But then again, with the focus on internet, maybe the SW-recorder got neglected in a back-room (unlikely, probably just another pipe into that Utah data center).

It's easier than you think to "capture" selected chunks of the RF spectrum. DOD, etc, have had this capability for decades, civilians have had scanners and broadband radios for decades. Amateurs can record entire HF bands and decode multiple CW and other signals in real time with modern receivers and computing power.

Tapping a thing and understanding what you are listening to are two totally different things. Theoretically broadcasting an encrypted message in which third parties cannot possibly have access to the endpoints is still the safest way to handle sensitive data. This is part of the reason why 'Numbers Stations' are so popular with us geeks.

Most likey: https://en.wikipedia.org/wiki/Numbers_station

Mid way through the opening paragraph mentions several people charged with spying based on surveillance of short-wave number stations.

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