452.5375 is definitely Security. TG 1, Slot 1. However it's shown CC as both 10 and 13. RAS was popping up a bit as well, but not always.
There are a couple reasons that I could be thinking as to why Restricted Access to System would be intermittent like that. One, it could be because of where you're located that you aren't picking up the data packet associated with such feature. Two, it could also be that they are using RAS in what is referred to as "Migration Mode". Essentially, it will allow radios with and without RAS to use the system together.
Now with that, you said "CC 10 and 13" are showing up. I wonder if they are using a repeater system at all. Here's why... It almost sounds like a feature that Motorola Solutions has in their MotoTRBO radios called "Extended Range Direct Mode". I have yet to fully play with this feature, but my understanding is that the radios not only send out a beacon to one another every so often, but they allow you to listen on 1 color code, and transmit on another. However, I believe that the MotoTRBO SL repeater can also have this feature enabled into them, I would have to look into that.
Now, if they aren't using a repeater system, this could furthermore explain why RAS is intermittent. Because on "simplex" or "talkaround", there's two things that don't matter. One is RAS. Because there's no system to acknowledge said "repeater password". Secondly, despite what some want to believe, timeslots also don't matter on simplex. Because there's no controller built into the radios to separate the traffic. That is what the repeater's job is. However, if you have to wrong timeslot selected, your radio will remain muted upon RXing... Long story.
