It's TGID 2274. As I said, it's one of those ISSI channels. I haven't heard it in a while, so I don't really know if they are still using it or not. I did find it unusual that it would pop up around here, but, then again, I heard Lake Jackson FD last night.
2273 and 2274 is being used for DPS Houston it is linked to the vhf repeaters from time to time i doubt that the ISSI channels are going to be used at all except the GCI channels for interop 2273 is linked to 155.4675 (Houston Tower) and 2274 is linked to 159.2175 (Huffman Tower)