What is the chance that a software can decode a dPMR encrypted signal? I guess there are 10 million keys?
How is this key programmed in the radio? I was thinking of buying a few of these. I just got ripped off on eBay on two DTR's and would like a radio with privacy capability.
I would be willing to bet a Motorola DTR can be as secure as 40 bit encryption, but you will have to buy the keyboard programmer and enable private call channels.
you can make private one to one channel set ups that require an 11 digit ID for the two radios. Example:
Private radio 1: 12345678901
Private radio 2: 10987654321
program contacts in to the radio,
Ex- Radio 1, go to contacts, select radio 2, then PTT
I use the Nextel DirecTalk cause they are cheaper and I enabled 10 digit private calling which provides enhanced security.
To decode a private call transmission you would need some equipment, such as a good near field receiver, a frequency generator and a VSELP capable radio.
ADP is 40 bit and im not sure if its like the old DVP which was 40 but only used 32 bits yielding about 4.2B keys.
For secure communications we are on Harris OpenSky, but still use some M/A Com radios running conventional DES encrypted AEGIS digital voice.
Also have some Transcrypt gear, but they are not as secure as DES.