Here you can post any pictures and videos of Denver's Cold War siren system. Here is a map of the system. https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.google.com/mymaps/viewer%3Fmid%3D1Y9OKaCUhNnTxAYEkvoe5p8yTeIo%26hl%3Den&ved=0ahUKEwjwybW_rPjTAhUV6WMKHXmFDlwQFggm...

So far I have only seen an inactive Model 5(T) due to the fact that I live in the Southeast Texas area where there are no sirens. But some time this summer (not specified) I am going up to Dallas and Tyler to see some Modulators, 2001's, T-128's, Whelens, an Allertor, some Penetrators, and maybe som...

Wow! An early 1980's p-50 from the ACA demo videos! Very cool!

Can we do Jefferson County Texas? They do not have a system.

I am new to the board and I would like to know when the next challenge is.