The station is owned by John Fuller, through licensee Red Wolf Broadcasting Corporation.

Although it was programmed well, it never achieved rating success due to the heavy competition from crosstown WHYN (560 AM).

With a 5,000-watt signal and much lower on the AM dial, WHYN could easily be heard around Western Massachusetts and northern Connecticut.

A year later, the station was sold to a group headed by Boston radio host Jerry Williams.

On May 1, 2016, WSPR split from its simulcast with WACM (which took on the "Kool Radio" oldies format) and rebranded as "Bomba 1490".