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Comment The Twilight Zone -- a Matter of Minutes (Score 1) 830

Sounds like segment three of the 15th episode of the mid-80's revival of The Twilight Zone to me. See:

The comments about religion are petty spot-on, too; in essence, this makes the universe merely a figment of God's imagination..... our the figment of a computer simulation.....

Comment Re:Tempest protocol (Score 4, Informative) 58

One of the key concepts to realize with 'van Eck phreaking' is that no shielding provides infinite attenuation at all frequencies. Even solid copper shielding has a finite, if very large, attenuation. With a cryogenic-cooled HEMT or similar front-end and a high gain antenna, the requirements for shielding could be as high as an attenuation of 100dB or more (copper screen is good for 30dB or so typically).

A cryo HEMT front-end isn't that far out of reach, even on pennies, as dry ice can get the temps low enough to foil thin shielding, and thicker shielding can be defeated with liquid nitrogen temps. Specialized near-field antennas that work on magnetic induction principles foil even the thickest pure copper, tin, or aluminum shielding; you need a ferromagnetic shield (mu metal is good) in addition to the copper to shield then.

Vent holes are the hardest, as you then want copper honeycomb material to act as 'waveguide beyond cutoff' attenuators. Slots and gaps of any kind can act as antennas; the Parkes radio telescope, for instance, has a webcam that required a very special enclosure where even the screw spacing had to be controlled. (see for details).

Comment Re:False positives (Score 1) 81

While I do have mod points, I need to post this. I regularly see 1,000ms ping RTT on my otherwise reasonably fast (7/.5) DSL service when I have a lot of upstream traffic, and that ping RTT is to the router's gateway, a single hop away. My boss, who is on a 50/5 cable service, has consistent 1,000ms ping RTT to his next-hop. RTT for other packets varies according to protocol and IP target, showing some QoS queueing going on.

My DSL RTT to the next hop varies between a couple of ms to 1,000 ms depending on upstream traffic amount; determining my location based on that would be foolish.

Comment Re:Amazing! (Score 1) 173

They already have control; 47 CFR Part 15 covers this completely.

While you can write whatever code you would like, and you can compile it with no worries, if that code causes interference above and beyond Part 15 rules it is a violation of the regulations for that code to be run if the device running that code is within the jurisdiction of the FCC (USA and its possessions). If you have a license, you are covered by the particular section of 47 CFR that covers your particular license, and you must abide by that license and its covering regulations (code for a TV broadcast transmitter, for instance, has a whole separate set of restrictions).

If a device possesses an intentional radiator of RF it is covered by one or more FCC regulations (in the US; internationally it's covered by the ITU and its vast portfolio of regulations). Many of the provisions of various regulations in 47 CFR are there because of ITU regulations, incidentally, including many in Part 15.

Comment Re:Question for Bruce (Score 4, Insightful) 173

I'm not Bruce, but several people within certain Bureaus of the FCC do indeed understand Open Source. Even as far back as the '90's one of the engineers in the former Mass Media Bureau (deals with broadcasters) actually published some Open Source code showing how to use Fortran as a CGI program for websites..... they also have released a large quantity of code over the years.

One thing to remember about government agencies is that they are made up of people; the question isn't whether the agency knows anything, it's whether the people employed by that agency know.

Comment Re:Been going on since as long as I can remember. (Score 1) 303

Given enough power on the transmit laser, you can blow out more than the sfp. Research the term 'fiber fuse' or watch for a hilarious holiday themed destruction of fiber with excessive light. (There are other videos on youtube; this one is just too funny to pass up.

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