When your country accepted and signed the International Treaty OR when the governing body in the country where you are operating said so! "Life gets easier when you learn to plow between the stumps"! Keep up the questions though, I have missed you enthusiasm! John Ferrell W8CCW "A nation of sheep will beget a government of wolves." -Edward R. Murrow ----- Original Message ----- From: "solarwind" To: "Microcontroller discussion list - Public." Sent: Saturday, April 03, 2010 4:37 PM Subject: [EE] Encryption Over Amateur Radio Frequencies - was Maximum Radio Bandwidth - Radio Amateurs of Canada On Sat, Apr 3, 2010 at 4:03 PM, Michael Watterson wrote: > However a few mW at 2.4GHz is all a balloon needs if it's a HAP. At > 144MHz you can talk to ISS with a rubber duck hand held with a few watts > as it passes overhead. > > Some malicious can easily jam your signal. I still find the "no encryption" ridiculous. So what if I talk normally over an amateur frequency in pig Latin? Is that considered encryption? What if I speak in my own made up language? Is that encryption? What if I'm autistic and my words don't make sense? Is that encryption? You can see the point I'm trying to make here. At what point is it considered encryption? What if I'm trying to control a a device at long range and I send it "commands" like this: 0010101010101010101010100101101010 - you get the idea. To the remote node, the command makes perfect sense. But someone listening in wont really understand what it is. Is that considered encryption? What if I add some more complexity to the protocol so acknowledgment is required on each command? For example, I would send a specific command A, and along with the command, I would send a certain mathematical function of A that corresponds to A. The device would then verify that mathematical relationship for validity (also helps to ensure that the command isn't corrupted for some reason). Is that illegal too? To send mathematical formulas/numbers over the air? In itself there is no "meaning" and therefore the "meaning" can't be obscured. Again, at what point does it become "encryption"? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist