Quoting Petros (Petros.Listig@fdrive.com.au):
Unbelievable to find PDP-11s in use, here and now!
It is possible they're using hardware like Strobe Data's Osprey FPGA PDP/11 implementation in a PC host. http://www.strobedata.com/home/products.html
In the mid-1970s when I was a high school student, Community Computer Center at 1919 Menalto Ave., Menlo Park had a PDP-11 running RSTS and a PDP-8 or two, all accessible to us feckless members of the public. Lots of ASR-33 Teletypes, I recall.
That's the community institution where Gordon French and friends founded the Homebrew Computer Club. (I was a hanger-on of that, too.) http://www.digibarn.com/collections/newsletters/homebrew/V2_09/Homebrew_CC_S...
In 1975.. Monash University had PDP/11s running MONECS with HP mark-sense card readers. You put in your card deck, and it compiled and ran your MONECS Fortran, Cobol, ... or would RJE into the Burroughs B6700. I should ask whether any of the MONECS code is still around as something else that can run on SIMH.