Yesterday between 4pm and 4:30pm I heard a radio tech on 453.6875 an analog Lane County Sheriff frequency. He was running voice tests and the channel was in the digital P25 format like those in their new trunk system. I also heard what sounded like someone keying a microphone on 460.2250 and 460.4250 former? LCSO analog channel's and it to was in digital P25 mode.