Do you have any connections from your time in New York who may still happen have or know the whereabouts of any green Twinsonic lenses?
Hi,
I can't say as I do. That was long ago. 1979-1984 -ish.
Like everyone else, the TwinSonic gave way to other, newer, things. In the Federal Signal crowd, the Aerodynic and JetStream took over.
There was all of one Vol Ambulance Corps in my area, vs dozens of Vol fire depts. Most VFDs ran their own rescue and ambulance company. So, only the one.
I recall making a couple green TwinSonic left and right domes along with making ones to replace the speaker section. My dad had a machine shop and he had some really cool plastic fabrication equipment. Essentially cutting and welding the plastic to form the parts. The welder looked like a small acetylene torch but sent hot air out rather than fire. And using a plastic rod which matched the plastic panels.
That equipment is long gone. Dad retired in 1990 and I moved in 1994 and slowly lost touch with almost everyone in NY. And, I really lost touch with the few that I was still in touch with after Mom passed in 2016.
Stan