Looks like the Discovery/Grove City site is out of site mode now. Also Bixby. Darby is still advertised. I see Discovery was removed from the database. This is the advertised site and neighbor list while on the Columbus MARCS system.
P25 Alt Control Channels
SYS bee00-348, PRIMARY 774.281250, ADJACENT 853.425000, Site 63, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 851.412500, Site 10, RFSS 1
SYS bee00-348, PRIMARY 774.281250, SECONDARY 773.531250, Site 16, RFSS 1
SYS bee00-348, PRIMARY 774.281250, SECONDARY 774.031250, Site 16, RFSS 1
SYS bee00-348, PRIMARY 774.281250, PRIMARY 774.281250, Site 16, RFSS 1
SYS bee00-348, PRIMARY 774.281250, SECONDARY 773.781250, Site 16, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 769.856250, Site 59, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 853.925000, Site 70, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 773.456250, Site 3, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 773.081250, Site 25, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 772.456250, Site 36, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 774.831250, Site 9, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 774.081250, Site 6, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 774.581250, Site 26, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 773.831250, Site 11, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 774.731250, Site 27, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 769.606250, Site 59, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 774.481250, Site 27, RFSS 1
SYS bee00-348, PRIMARY 774.281250, ADJACENT 771.631250, Site 11, RFSS 1