Whenever I am programming a system I am not used to or will just be passing through, I just program all the frequencies and let the radio worry about it. There will only be one control channel active at any time.
If you have identified three different control channels, just put all three in providing they are all on the same system. If you have found more than one control channel active at the same time, they are not from the same system (at least not in Jefferson Co., TX). The database only shows two possible CC's, what other one did you find?
Well as I said, since I was just traveling through the area, I just put all the frequencies in. Now, looking at what you have there and a closer look at what is in the DB, there is a problem. First, 855.9625 is apparently not part of the trunking system. It is under license WPDM948, which is not part of a trunking system. Possibly MDT's?? Second, scanning the FCC license plainly shows that not all the frequencies are in one spot, nor are the simulcast so the DB entry, as to frequencies and site is incorrect. I am afraid that unless someone in the Beaumont area runs Trunker (or something similar) and gets the proper sites vs frequency layouts, we will just have to leave it as is.