460.1875 151.4 pl --> dps?

For 5 years I have had 460.1875 programmed in my everyday scan list. This freq is listed as DPS “Ch 7 Phoenix Metro North Patrol” in the Southwest Frequency Directory. Until this last week, I have never heard anything on this freq. Last week I heard was sounded like radio techs talking about antennas and SWR on 460.1875 with a PL of 151.4 (a common DPS PL tone). I cannot verify what I heard was DPS. It is a repeater, and I heard some repeater keyups today on the freq too.



Has anyone else heard this frequency? Anyone have any information on possible DPS frequency changes for the Phoenix Metro area in the near future?