In theory, it could be possible to mount a simple siren upside down. You would need very strong bolts, and depending on the size of the siren you might need even longer bolts or extra reinforcement. Gravity would be pulling the siren down just the same as if it were mounted right side up, to it coul...

I found some old pictures on the CADL archive of what appears to be Big Bertha? I think I might have stumbled upon another picture of it.

Pro tip... use the measuring tool to draw circles! Google Earth Pro's drawing tools do not include an easy way to draw accurate circles. But, the ruler/measuring tool does let you measure circular areas and save them as KML, so you can do the following to draw a circle: Open measuring tool (ruler i...

I've always wanted a map that has siren coverage circles in it. I know that there are a lot of tutorials out there for circles, but all of them use the same websites or other maps, and the questions on google and other websites don't help either. The websites that are out there are really confusing ...

I've made this map and it shows its current system and old system, and added the coverages for the 2001s, 508s, and other such sirens, please let me know if there's any more locations, thanks! https://www.google.com/maps/d/u/0/viewer?mid=1k7oUSRxF2lPP7_5E5FMELWghaCki2no&ll=35.159816464588594%2C...

I was looking around on the CADL photo archive, when some photos caught my attention. I was looking around for civil defense pictures when I found these two photos: 1. (description from archive) "Men looking at heavy equipment, at either the north or south side entrance to the Michigan capitol ...

It unfortunately might not be possible to tell them to not take it down. It still very may be likely, just be careful about who you ask about it, and be prepared for your plan to backfire. They might have some good reasons why they want to take it down! I'm fine if they want to replace a very old T...

The CD logo was typically a decal that they would put on the siren. They usually used a highly adhesive sticker or glued the decal onto the siren itself. If you need it, here's an original CD logo you can use: https://upload.wikimedia.org/wikipedia/commons/8/88/Roundel_of_the_United_States_%281961%E...

I for some reason can't see the images. You may have to upload the images to the post, so they are more likely to be seen!

It unfortunately might not be possible to tell them to not take it down. It still very may be likely, just be careful about who you ask about it, and be prepared for your plan to backfire. They might have some good reasons why they want to take it down!