I was doing a bit of reading on the Cold War recently, specifically on the other side of the Berlin Wall (East Germany, USSR, etc.). I have noticed in some videos from the former communist bloc (With an example being Stalin's funeral in 1953), sirens have been sounded. I have been curious as to find out any information / locations of these sirens. I know of a few models, but alas, my knowledge is zip on them compared to other products of the eastern bloc, such as Mosin Nagant Rifles and Trabant automobiles.
These are the models I have heard of:
S series (USSR)- S-28 and S-40. I saw a picture once, and looked like a typical siren like a Siemens or Hoermann product
Unknown model from Yugoslavia - 12 volt vehicle sirens.
So, does anyone have any pictures or information on this rather mysterious topic of the sirens of the Communist Bloc?