In 1974 WCGY was "The Rock Garden", automated Top 40 (with some popular album tracks mixed in), throughout most of the '70s, but their Oldies period that the poster above mentioned was in the early '80s, and they had a fully live airstaff for that.
At first they called the Oldies format "Blue Suede Radio" as it started with mostly '50s and early '60s oldies for a short time, then soon added later '60s and early '70s oldies.
The ratings were never great with the rimshot signal (then transmitting from Andover), but it had some listenership because it was Boston's only Oldies station at the time. Their only Boston Oldies competition in the early '80s was some of the music still on the original WROR 98.5, which had by then given up on the full-time "Golden Great 98" Oldies format they had in the '70s and was by then an AC/Oldies mix.
Toward the mid-'80s WCGY morphed the Oldies format into a tighter Classic Hits format (called "SuperHits" for a short time) with some current hits that fit in, which ended up becoming more of a Classic Rock format later in the '80s with air personalities including former WBCN DJ Jerry "Duke of Madness" Goodwin, but it couldn't get very competitive Boston ratings against the powerful up-and-coming WZLX with its full-power centrally located Prudential Tower transmitter.
In the mid-'90s the 93.7 transmitter was moved from Andover to Peabody, as close to Boston as they legally could on the frequency, when it was by then '70s hits WEGQ "The Eagle".