It sounds like you did one of two things possibly.
1. You didn't program the radio system as a trunked radio system? Did you program it as a trunk system or did you just enter the frequencies like you would any other conventional frequency?
The other option is that you possibly have not enabled the trunking option on that specific bank in your scanner. You have to hit that trunk button when the scanner is scanning on the bank you have the TRS programmed into. You can't hit it while it's scanning a bank of conventional frequencies and have it turn on for the bank that you want to scan the system on. It takes real quick action sometimes to do that and you may have to turn off the other banks that are not trunk systems in order to just have that one bank that has your TRS scanning at the time. And then you can hit the TRUNK button to turn it on and off. If it's off it will just scan the frequencies like any other conventional frequency.
I have mine programmed With nothing but military aviation frequencies now and it's been probably a decade or more since I programmed anything in that is a TRS. So I'm a little rusty on telling you how to do it step by step right now. But there should be a button on there that says something like TRUNK. I'm looking at the front of mine right now, and mine is a BCD796D. The card is built into it for digital as far as I know. But if you look to the right of the screen and you look down to the fourth button to the right of the screen, again looking down and not across, you'll see the TRUNK button. But you do have to program the frequencies in as a trunk system for whatever type of TRS you are trying to monitor. Whether it's a Motorola Type 2, EDACS, LTR, etc it has to be programmed in the trunk mode. You cannot just put the frequencies in and then use that trunk button.
Just looking at mine right now, you hit the MENU button, then you pick the second option which is 2. SCAN OPTION, And then you pick two again which says TRUNK. There it will take you to the first channel of whichever bank you're currently on and you can program in frequency 1, move up and program in frequency 2, and then so on.
Also look through the menu I believe under , the third option when you first hit the menu button, and then go down to the last option which is number 10 even though it says 0. Just be sure that the P25 card is turned on if it's a digital system. I don't know anything about the system you're talking about programming but be sure it's one that can be programmed into this radio. These radios came out before the rebanding and I don't believe you can add any 700 MHz frequencies in them.
Like I said, it's been a while since I've put any kind of trunking programming into mine and I'm rusty on it myself. But hopefully some of that will help you if it's a system that this scanner is capable of trunk tracking. Good luck!
I'm legally blind and I'm about to go to bed so I can't go back and really proofread this whole message and make sure Google typed everything right. But I did make sure to make the options on the radio in bold so as to hopefully make it easier to read this and then look and find what I was describing. Goodnight
Brian
COMMSCAN