tag:blogger.com,1999:blog-6397871199660601224.post8398201992614258340..comments2024-01-08T22:19:59.038-06:00Comments on Battlefield Spork: Part 20, Chapter 2 - Further EspionageNathan Johnsonhttp://www.blogger.com/profile/09504332787476259342noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-6397871199660601224.post-20546830427284149802016-04-10T17:07:26.861-05:002016-04-10T17:07:26.861-05:00We also know from the docs that Ed Snowden leaked ...We also know from the docs that Ed Snowden leaked that the NSA has had bugs for years that could be remotely probed by radar, but didn't transmit on their own. See "NSA ANT catalog" for more details. That's a more stealthy technique than constantly sending data through the ground that could be picked up from emissions radiated by other equipment connected to the same ground.Anonymoushttps://www.blogger.com/profile/11940703605954596797noreply@blogger.comtag:blogger.com,1999:blog-6397871199660601224.post-10778138078772738742016-04-10T16:59:56.277-05:002016-04-10T16:59:56.277-05:00Ground wave radios exist, but it'd be challeng...Ground wave radios exist, but it'd be challenging to send high-def video for more than 1 km because the attenuation is so bad, and because the losses rise with increasing transmit frequency.<br /><br />I might buy it if there were a salt marsh connecting Terl's office to the Academy. The Wiki page for "spectral efficiency" has some nice examples of the bits/sec/Hz efficiency of various digital modulation techniques.<br /><br />With spread spectrum, a suitable QAM encoding, and adequate error correction, you might be able to do it, but I'm not sure you'd escape detection that way if someone were searching for transmissions. You couldn't use it in today's world because it'd create too much interference with other radios, but in the context of this story, you could.<br /><br />This is one area where I have to give Hubbard a little credit, because it wouldn't have been feasible in his time with analog and "1G" cellphone/modem technology, but it's probably feasible today due to advances in digital signal processing technology.Anonymoushttps://www.blogger.com/profile/11940703605954596797noreply@blogger.comtag:blogger.com,1999:blog-6397871199660601224.post-16093174290467586182014-01-28T01:52:45.081-06:002014-01-28T01:52:45.081-06:00I've really been enjoying this sporking! Just ...I've really been enjoying this sporking! Just as a quick note, ground-wave radios do exist.Anonymousnoreply@blogger.com