I found these frequencies for Spectrum Health on the FCC website. Are these relevant for the database? there are ~80 channels spanning from 457MHZ to 469MHz.
https://wireless2.fcc.gov/UlsApp/UlsSearch/licenseFreqSum.jsp?licKey=1601895
https://wireless2.fcc.gov/UlsApp/UlsSearch/licenseFreqSum.jsp?licKey=1601895