One of the stranger things I had happen with an install of electronics I did was when installed a Maxon Video Door intercom at Photo Antiquities Museum on Pittsburgh's North side.
Owned by Bruce Klein a long time Jewish Businessman who also owns Bernie's Photo Center
He decided to expand his love of photography for all to see.
So up on 2nd and 3rd floor of building next to Bernie's he opened his museum. and needed something to know when visitors where at the downstairs door .
Maxon who at the time in early 90s was big time into 2way radios and electronics had a very economical video intercom so I picked one up and installed it. Front door camera and intercom and a video monitor intercom on each upper level
The museum was a big hit with the community and had a fun opening in September of 1994
But something strange happened that winter to this day I have never figured out nor have a couple engineers been able to figure out either.
One day during December when one of the staff was walking down one of the halls which has the video monitors when they hear Christmas music playing .
OK so where is it coming from seems the video monitor is playing Christmas music something it was never designed to do.
I go up and check it thinking it is hearing music from street and probably the front door intercom is stuck on.
No this is not the case it is definitely music coming thru the intercom.
I turned off power to system and it can still be heard very slightly. OK so we are getting an overloaded signal from one of the radio transmitter towers up on Observatory Hill .
But this is not the case we are hearing Word FM 101.5 tower is not near the museum .
OK this has got to be some kind of joke some one is playing on Bruce since he is Jewish so I check all the wiring and find nothing .
I then call the Broadcast Engineer at Word FM tell him what is going on he is intrigued as well says maybe there is a spur coming off tower caused by all the ice that year but as far away as his tower is not likely.
So the music played all month mentioned it to an Electrical Engineer friend about what was going on he come down and could not figure it out either.
But then January 7 little Christmas it stopped and was never heard again we never did figure out what was causing it.
Was it a sign from god ? some kind of atmospheric anomaly? who knows but it was neat to be part of the experience.
Since the Museum is supposedly haunted anyways well just chalk it up to another case of the unknown.