Bradley is on WBZ, AM 1030 in Boston, MA (Sundays 10pm-Midnight)
Along with Dean Johnson and Morgan White Jr, Bradley is also sharing fill-in replacement duties on WBZ's overnight program (midnight to 5:00AM M-F--remembering that a lot of people consider midnight Monday to still be part of Sunday). WBZ is supposedly trying out Bradley, Dean, and Morgan for the full-time host job on the 25 hours/week overnight program (and will eventually pick one of the three to replace Steve LeVeille, who retired without warning several months ago). WBZ can be heard on the Internet just about anywhere and on most nights, its clear-channel AM signal is audible throughout the eastern US and eastern Canada.
Of the three fill-in hosts, Bradley is my favorite, but I don't think you will find anything that even remotely resembles unanimity on that point here.