Retro said:
WMRQ 1986-1987. I think their positioner was quality rock.
Yes, it was their stab at a "Triple A" (Adult Album Alternative) format, back when WBOS was still Country, and WXRV "The River" was still WLYT ("Light FM") Soft AC. Though there was no other such station in the market at that time, I don't recall that WMRQ was very successful.
If I remember correctly, the switch from WMRQ to WODS was abrupt, to prevent another full-power FM station (I think it was WBOS??) from going FM Oldies at the time. There was no FM Oldies station in the Boston market when 103.3 made the switch. WZLX was playing Classic Hits (Classic Rock with a few pop and soul oldies hits mixed in, sort of like WROR now), but they went fully Classic Rock shortly thereafter. Greater Media's 1150 WMEX (now Salem's WTTT) was all Oldies at the time in AM Stereo, but that signal couldn't compete with a full-power Oldies FM. WBOS ended up going "Triple A" a little while after 103.3 abandoned that format for Oldies.