No, no Arbitron rules have been broken. And no FCC rules have been broken either. However is IS hilarious that a station unofficially identifies itself in a place it barely can be heard, but that is somewhat typical of fringe rim-shotter business stations in many markets. (NYC excluded).
The only thing negative about those call letters being so close to 1030's is that it is a no-no in the broadcast biz to do that. Prior to the 1990's the FCC required that for every call-letter change, the station wanting to make the change had to certify to the FCC that they sent out letters of intent, mentioning new proposed call letters, to every radio and TV station within 35 miles of its location. So if another station wanted to protest that, they could, to the FCC. After around 1988 or so, the FCC said we don't need all this paperwork... Call letters are a local issue...we'll assign them, but we don't want to get in the middle of it all. Their thoughts then (and now) were/are for the two or more conflicting stations can fight it out in local court..... which is likely to happen. And if that happens, then 1460 will get a lot of free press.
Now let's see what WBZB could mean. "We're the Busy-Bees of Business, 1460". ??
Or Beezlebub Radio?