I installed WBTY's studios in ~2000 and worked on WNBY's setup back in 2004 or 2005...something like that. Last time I looked, WNBY's carrier-current transmitters were not operational and there were no plans to fix them; the cost/benefit analysis didn't justify it, and there were more concerns about trying to get the station to be webcasting.
WBTY's radiating-cable FM setup was after my gig there, but like WNBY's carrier-current, the system...like all CCAM and RCFM systems...is designed to be in-building listening only. Exterior reception is going to be measured in feet, usually. Maybe a few tens of feet, but that's it. A pirate wouldn't know about WBTY and probably wouldn't care anyways...but WOULD also blow away the weaker (and legal) WBTY signal.
I don't want to speak too much for WBTY or WNBY, but I know the kids at WTBU (Boston University) don't really care about their 640AM CC and 89.3FM RC systems; all the listeners are either through the web or through the audio on one of the TV channels on the campus cable system. I'm not surprised. While it is perfectly POSSIBLE to have a viable Part 15 AM or FM transmission system...WLOY at Loyola College, Baltimore comes immediately to mind...it is very difficult and more expensive than most people think. You have to "over build" the heck out of the system to get through the rampant RFI on the AM band from cellphone chargers, CFL bulbs, etc...and the crummy tuners in most non-car radios has a hard time getting the inherently-weak FM signals from a Part 15 FM system.
BTW, it's been a few years, but I think Weck-bah (WECB) is still around but only in webcast form.