A 1986 recording of presumably an EOWS 408 or 612 siren was recently discovered in WGBH’s Boston TV News Library.
The Pilgrim system was installed in March 1982 according to newspapers from the Plymouth area of the time, and were EOWS sirens from what I could tell.
This recording was made in September 1986 for WCVB-TV 5 in Boston back when the Pilgrim Nuclear Generating Station was up and running. I am actively working with the Archive to get this recording digitized so the siren community can see a 1980s siren test, especially if it’s a 408 or 612.