CONELRADFever


CONELRAD was established by President Harry S. Truman in 1951. The emergency broadcast system had two goals. Primarily it was intended to control civilian radio transmitters (so enemy bombers couldn’t use them for navigation), and secondarily to provide essential civil defense information to American citizens in case of a Soviet nuclear attack. For the purpose of shutting down local and national radio stations these were required to ‘listen’ to CONELRAD 24/7 (this could be automated by radio equipment) and immediately go ‘off air’ once the prearranged signal was broadcast – CONELRAD would switch on and off for 5 seconds twice and then broadcast a continuous tone for 15 seconds. AM stations were expected to stay off air, but key FM and television stations were to broadcast special announcements on 640 or 1240 kHz in turn, according to a ‘round robin’ system. It was hoped that this would confuse enemy bombers and prevent them from using the stations as homing beacons (although it’s unlikely the Soviets depended on local broadcast for navigation). Once the enemy bombers were sufficiently confused, the key FM stations would transmit important information to the panic-stricken citizens.
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CONELRAD was established by President Harry S. Truman in 1951. The emergency broadcast system had two goals. Primarily it was intended to control civilian radio transmitters (so enemy bombers couldn’t use them for navigation), and secondarily to provide essential civil defense information to American citizens in case of a Soviet nuclear attack. For the purpose of shutting down local and national radio stations these were required to ‘listen’ to CONELRAD 24/7 (this could be automated by radio equipment) and immediately go ‘off air’ once the prearranged signal was broadcast – CONELRAD would switch on and off for 5 seconds twice and then broadcast a continuous tone for 15 seconds. AM stations were expected to stay off air, but key FM and television stations were to broadcast special announcements on 640 or 1240 kHz in turn, according to a ‘round robin’ system. It was hoped that this would confuse enemy bombers and prevent them from using the stations as homing beacons (although it’s unlikely the Soviets depended on local broadcast for navigation). Once the enemy bombers were sufficiently confused, the key FM stations would transmit important information to the panic-stricken citizens.

(Source: machineagechronicle.com)


Seattle Civil Defense Manual

Seattle Civil Defense M anual circa 1951 explaining how exactly to survive 
Specifics include how to build your own personal bomb shelter, tips for the aftermath of a blast (“wait at least one hour to give lingering radiation some chance to die down!”), which areas/landmarks would be hit first (no harshing on Tacoma and Everett!), how it kills you, and more. The pamphlet is rounded out with a long list of “subversive organizations” from the House Un-American Activities Committee. I don’t see France on the list. 


http://www.vintageseattle.org/2008/03/17/surviving-the-atom-bomb-in-seattle/

edit: Hah, every time I copy/pasted from that site I got some weird links for penis growth ads View Larger

Seattle Civil Defense Manual

Seattle Civil Defense M anual circa 1951 explaining how exactly to survive 

Specifics include how to build your own personal bomb shelter, tips for the aftermath of a blast (“wait at least one hour to give lingering radiation some chance to die down!”), which areas/landmarks would be hit first (no harshing on Tacoma and Everett!), how it kills you, and more. The pamphlet is rounded out with a long list of “subversive organizations” from the House Un-American Activities Committee. I don’t see France on the list. 

http://www.vintageseattle.org/2008/03/17/surviving-the-atom-bomb-in-seattle/

edit: Hah, every time I copy/pasted from that site I got some weird links for penis growth ads


Wow, I have to get off my ass and post more in this blog.

Today, July 16, marks the 68th anniversary of the Trinity test and birth of nuclear weapons and the atomic age. For many, this is nothing to celebrate as with Trinity came a new period of warfare, paranoia and fear that has affected pretty much every single person on the planet in some shape or form.

That said, Trinity was the culmination of a massive and admirable feat of production, engineering, and science by many hundreds of thousands of people over a long period of time the research of which has been used for some truly great things.

For better or worse, history and mankind was changed with Trinity and nuclear weapons, so if not worth outright celebrating, Trinity’s anniversary is at least worth solemn observance.


And a videoclip!
Upshot-Knothole Grable, a nuclear shell delivered by artillery. This was the first and only time the US ever used this device and it is one of the few times that the US has detonated a gun-type bomb (the same kind as Little Boy).
It’s probably obvious why this kind of weaponry never took off. The blast in the video is a 14kT yield and was fired ~2 miles away. While they were out of distance of physical harm, a slight change in wind could rain fallout all over those at the cannon. View Larger

And a videoclip!

Upshot-Knothole Grable, a nuclear shell delivered by artillery. This was the first and only time the US ever used this device and it is one of the few times that the US has detonated a gun-type bomb (the same kind as Little Boy).

It’s probably obvious why this kind of weaponry never took off. The blast in the video is a 14kT yield and was fired ~2 miles away. While they were out of distance of physical harm, a slight change in wind could rain fallout all over those at the cannon.