If you have a UHF radio, you should know how to find the DHS common interoperability channels: DHS-RPT and DHS-SIM

Once your radio is reprogrammed with the new DHS common template, the 16 interoperability channels in Zone IO2 will appear as shown in the table on the following slide

If the radio has not yet been reprogrammed with the new DHS template, then the common channels may be in other existing zones within your radio.