Some time ago while searching the federal bands, I came across 163.0875 which sounded like an analog repeated channel. After some time listening, it seemed to be DFW National Cemetery operations. After a quick save to my 996P2, I locked out the frequency as it was certainly routine in nature and not something I was interested in. I recently "unavoided" all channels for reprogramming. Now, this frequency is still active however; I am hearing the distinct "buzzsaw" sound which I recalled as a digital signal on an analog scanner. It may now be ENC although it does not display anywhere and and is not ignored as a ENC frequency on the 996 nor my SDS100. I saw on a NTIA list that 163.0875 and 171.0125 were VA Dallas P25 channels and I wondering if anyone hears any traffic differently than I do. TIA