May be a stupid question but I'm relatively new to trunked scanning and I am looking to program some MSHP talk groups into my scanner, more specifically the Troop C ones. Going through the database I noticed there are a huge amount of sites, and many of them overlap each other, such as the St. Charles Simulcast site and the Weldon Spring site. My question why are they overlapped like that, and can I receive MSHP radio traffic on all of them, or are they only broadcasted on one site, and if they are only on a few specific sites, how do I know which one to program? Thanks for any help!