Las Vegas Metro is one of the 2 or 3 police departments in the nation that have encrypted radios. It happened after the Mandalay Bay shooting, when people recorded some of the police transmissions, that raised a lot of questions about the event. You won't hear anything with an analog or digital scanner. I might be wrong, but I have several scanners and I can't understand anything on the police frequencies like I used to 10 years ago
Not true at all.... Agencies have been using encryption for quite awhile. Metro was slow to the program due to transparency and media complaining about locking them out.
While I liked open radio freqs and transmissions, broadcasting people's name, DOB, SSN, plates, criminal history, etc. was something that needed to be stopped. There were already channels that were non-repeater so the scan range was limited too, so not every transmission could be heard on a scanner.
After 9/11 and inter-agency comms was pushed, it took decades before stuff really reached a good level. Trying to buy into junk systems and cheap options, while testing technology, created delays in actually having functional systems. Everyone thought the mil was the best testing ground, but that isn't the same thing. Tyco/Harris was a joke of a system. Granted, tech improved and CAD systems transitioned to cell based options over radio based.
IP based systems have really opened the door to sharing comms and making it much easier to encrypt and control access.
Personally, we had A LOT more fun before the full digital kicked in. The ability to say things whenever and not be tracked was awesome. Now, every radio is a GPS pod that tracks everything you do and say. Tracks when it is on, what channel and so on. It was tracked that day on 10/1 just to see if the system properly handled all those radios operating on a single channel.