For now, EMF will have to be satisfied with an FM translator, broadcasting at 250 watts, in Boston.
Actually it's not in Boston, and its signal doesn't cover Boston proper. It's in Medford with a directional pattern nulled toward Boston.
Heading from Medford toward Boston, it becomes weak in Somerville, spotty in Cambridge, and across the Charles River in Boston proper (Back Bay, Downtown, and the neighborhoods to the south), it's practically gone.
That's not only due to the directional null, but also the second-adjacent IBOC-HD blanketing from 105.7 WROR on the Pru gobbles it up in town. Some parts of the City of Boston where it can be heard somewhat include East Boston, Charlestown, and Brighton west of the main null and away from the Pru.
Its signal is good in the Mystic Valley suburbs north of Boston, and fair on the lower North Shore and in the north and northwest suburbs within Route 128.