JohnDistai
Member
- Joined
- Sep 10, 2010
- Messages
- 129
Hi. I was looking at AOR receivers on eBay. There is a listing for an "unblocked" receiver. What is normally "blocked"?
Thanks!
Thanks!
I have a pro 2006 with the Cell freqs . I have not heard anything as far as cell phone calls in yearsThat's what I thought. However, I've read on the internet that you can pick up analog frequencies, but not digital ones. Most of the stuff that I've read says that newer phones use some sort of digital transmission or encrypting or something that makes the calls very difficult to intercept. Is this not true?
That's what I thought. However, I've read on the internet that you can pick up analog frequencies, but not digital ones. Most of the stuff that I've read says that newer phones use some sort of digital transmission or encrypting or something that makes the calls very difficult to intercept. Is this not true?
To answer your question, yes, the cellular band is blocked, though there is no real reason for this due to encryption and modulation type. Cellular radios (after all, a cell phone is just a hand-held radio) utilize a digital signal, Gaussian Phase Shift Keying (GMSK) to be exact, and are heavily encrypted. GSM utilizes A5/1 encryption, which is not decipherable by any off-the-shelf radios, it requires computers to break it out, though it is not impossible, as A5/1 has some pretty exploitable flaws.That's what I thought. However, I've read on the internet that you can pick up analog frequencies, but not digital ones. Most of the stuff that I've read says that newer phones use some sort of digital transmission or encrypting or something that makes the calls very difficult to intercept. Is this not true?
I apologize, in correction of my last post, the term is "Gaussian Minimum Shift Keying".That's what I thought. However, I've read on the internet that you can pick up analog frequencies, but not digital ones. Most of the stuff that I've read says that newer phones use some sort of digital transmission or encrypting or something that makes the calls very difficult to intercept. Is this not true?