They don't have to be encrypted. An agency will encrypt a digital radio because there is no deteriation of the signal on receiving radios. With analog radios, there was quite a bit of deteriation of the signal.
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ProVoice audio samples requested
- Thread starter mitaux8030
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They don't have to be encrypted. An agency will encrypt a digital radio because there is no deteriation of the signal on receiving radios. With analog radios, there was quite a bit of deteriation of the signal.
??? That is exactly what I said...
Okay, I see that you must have missed my point. My point being: encryption with digital is better than with analog. Nothing more, nothing less. People would steer away from using DES over analog because of the signal deteriation. Not so with digital. So therefore, more users are using encryption with digital.
The using encryption to protect the signal from eavesdroppers is a moot point. Why else would they use it? They are using it more these days because it sounds better for the users and it's cheaper than ever before.
So, no clarification needed...
Yeah I apologize, its just anyone uninformed may assume that people are just moving to "encrypted" radio because it sounds better, which would make digital scanners a pointless purchase. Fortunately radio manufacturer's haven't tried to pimp that out or I'm sure every digital signal out there would be encrypted. Scanners are still hanging on!
Plus DES can't be used over analog. You need 1's and 0's. I suppose the only real encryption you can get over analog is voice inversion, and that's like locking a door with a twig.
Damn digital age is ruining everything.
Plus DES can't be used over analog. You need 1's and 0's. I suppose the only real encryption you can get over analog is voice inversion, and that's like locking a door with a twig.
Damn digital age is ruining everything.
DES has been used since the '70s over analog signals. I ran a contest here to see if anyone could break it. Only one came close. It's still up and running if you want to take a stab at it.
http://www.radioreference.com/forums/showthread.php?t=63775&highlight=des+contest
There is a lot to read through, but you'll find the files for your listening pleasure. Good luck cracking it! hehehe
greeneyes965
Member
So why are there analog systems still?
MONEY!
New digital systems are very expensive and a lot of agencies just don't have the money to upgrade, even with federal grants.
I still get a chuckle out of all the know-it-alls saying it was too old and easy to crack :lol:
Me too!
Hell, I even gave them the key and the format (plain old DES) and they still had trouble.- Status
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