Earlier today, I heard an EMS unit talking to Oakwood Hospital on Med Channel 5: 463.1000 MHz. I noticed that HEMS was using a Digital PL of 631. Is this a replacement for the old 156.7 CTCSS PL tone?
Med 5 (and Med 8, but I've never heard it used) is a repeater that HEMS set up in Dearborn a couple of years ago for Dearborn FD. The Dearborn repeaters do have DPLs..Med 5 is D631 and Med 8 is D315.
Also, just so everyone's on the same page, 156.7 is just the downriver PL (@ HFWH), the repeaters at St. Mary's use 97.4