MSHP frequencies have been discussed in the Missouri forum before. I would find the threads for you, but right now I am too lazy to do that.
Is there not anything in the RRDB that can help? Again, too lazy to look even for myself!
Once you find the frequencies it would be a simple matter to mosey on over to the FCC's website and see what you get there.
HTH's or at least gets ya pointed in the right direction.
