MikeSD
Member
- Joined
- Sep 28, 2010
- Messages
- 73
Academic question: What is the difference between "inversion" scramble and "rolling code" scramble? Technical and real world difference.
I've been trying to find a description that defines the differences between "inversion" scramble and "rolling code".
I have found descriptions that say "inversion" is a less secure scramble and that "rolling code" is much more secure. And rolling code give you more codes to choose from but in tests, I don't hear much of a difference. I did a test where I recorded a simple "inversion" scramble from a radio and compared it to the same radio, using "rolling code" (actually did this with 2 different codes). The reality was, you could still kind of understand what was being said. Well, almost. I knew what I said, so for my test, I could kind of understand what was being said.
I really didn't notice how the "rolling code" scramble was any more secure. Most radios that have "rolling code" cost a bit more and say that rolling code is a much more secure communications. How so?
Anyone have a technical understanding of these types and can explain the difference?
I've been trying to find a description that defines the differences between "inversion" scramble and "rolling code".
I have found descriptions that say "inversion" is a less secure scramble and that "rolling code" is much more secure. And rolling code give you more codes to choose from but in tests, I don't hear much of a difference. I did a test where I recorded a simple "inversion" scramble from a radio and compared it to the same radio, using "rolling code" (actually did this with 2 different codes). The reality was, you could still kind of understand what was being said. Well, almost. I knew what I said, so for my test, I could kind of understand what was being said.
I really didn't notice how the "rolling code" scramble was any more secure. Most radios that have "rolling code" cost a bit more and say that rolling code is a much more secure communications. How so?
Anyone have a technical understanding of these types and can explain the difference?
Last edited: