Electronic Sight Systems & EMP

[Timothy]

Hmmm...Am I correct when I think that the wire passing through the magnetic field has to be ferric for the current to be generated?
 
Would an aluminum wire also be affected?

Are there other conductors that might not be affected?

Aluminum is a very good conductor with nearly 60% of the conductivity of copper and still used extensively.

[Pathfinder]

Hmmm...Am I correct when I think that the wire passing through the magnetic field has to be ferric for the current to be generated?

Would an aluminum wire also be affected?

Are there other conductors that might not be affected?

Any conductive material will be affected - copper, aluminum, iron, silver, anything that conducts electricity at STP (standard temperature and pressure).

[Pathfinder]

wouldn't a a grounded safe work as a Faraday cage?


seems like it meets all the reqs.

As for gun safes, doubtful. They aren't typically grounded, and there are gaps around the door. These are fire safes, intended to protect the contents from high heat, not energy waves.

Even a well sealed door has paint on it, and the paint is not a conductor. Neither are the fire seals. From what I have read, any gap in the cage will negate the effects of the cage, and will allow the EMP radiation to enter the Faraday cage. Also, if you use the bottom hole to run an electric dehumidifier to the safe, that creates another opening.

You might be able to make a safe - or safe room - into a Faraday cage, but it will not be cheap or easy. Even the metal ammo cans are not considered enough - placing electronics into an ammo can, sealing it, then putting the ammo can in a galvanized garbage can with the lid on snugly is thought to be sufficient, depending on the closeness and power of the EMP.

Again, lots of data, very little information. And maybe intentionally - there was a news story last week about a city in Spain where the police activated some device that completely shut down electronics within 500 meters of the city hall. Power was lost, no radio signals of any kind were transmittable (cell phones, radios, etc.) from before the big shot's visit until about an hour after. Not EMP, electronics were not damaged, but they certainly were dampened. Knowledge and implementation of the effective use of EMP counter-measures would negate this .gov ability.

[TAB]

they make paint that is electrically conductive. (infact many pegments are very conductive witch is why the non conductive stuff can not be tinted with natural pegments)   

my main gun safe was the OG safe from the river city bank built in 1908,  It has no fire rating, and actually do to the exposed hinges is not legally a safe as far as CA is concered... it is only 4000# and is made of 3/8" hardend steal plate.   


it would not be very hard to make a conductive seal, loosly braded copper wire comes to mind, assuming it has direct contact to both the door/jamb and is compressed.  Grounding a safe would be very easy, you would just have to connect the door, to the inner and outer skins to a good ground.

[twyacht]

Most modern electronics, with "motherboards", like cellphones, remote controls, laptops, etc,....use a PLC, or programmable logic controller. Regardless of the input power, 12VDC, 120VAC, 9Volt Duracell, Lithium-Ion, NiCad,...doesn't matter.

Internal transformers, have gotten kinda fancy, they convert the incoming voltage to all kinds of voltage to run said component. 12volt AC, is pretty common for household electronics.

The PLC runs on a 6-20 milliamp controller. to brighten the red-dot, you change the signal to the PLC. Kind of like a fuel tank sender. But they usually run on an ohm resistance, as current and fuel can be bad...

In essence, the electrons are disrupted, through the magnetic pulse creating a forced "charge" through your stuff. Some Starfish Prime testing in the early 60's had 22,000 volts, "pulse" and knock out street lights in Hawaii, over 800 miles away. There was almost no amperage, but they were zapped with an exponential increase in voltage.

Electrical stuff back than was more primitive and rugged, compared to today's "motherboard" micro processors, silicone chips,...etc..

I don't know for sure if an Aimpoint, ACOG, EOTech, or any holographic optic would still work....If you were close enough, I'd say they would be kaput...

Hence, my BUIS....

If you have a safe, with hopefully a GFCI outlet, you could always place isolation bushings between the bolts, and safe. attach a 6 or 8 awg to a mounting bolt, and run in to your houses ground strap. (or get a 8 ft piece of re-bar, and pound 7 3/4 of it into the ground and clamp the cable to it. It could offer a better path of least resistance back to ground, which all stray voltage wants to do..

Thanks now I have a headache...

[Sponsor]

[twyacht]

Just had an idea....Someone get a stun gun and zap their $600 EOTech and tell us if it still works....

 

[Solus]

Can't we make little tin foil hats or something for our Red Dots?

[Magoo541]

I was talking to one of my buddies at work and Farad Cages came up.  He worked in construction in the '80s and did some work for an alphabet agency in one of the sky scrpers and there was a farad cage around the entire floor, perimeter, ceiling and floor.  We wondered what the purpose could be and figured it was survelience counter measures but could have been EMP protection too.

[tombogan03884]

I was talking to one of my buddies at work and Farad Cages came up.  He worked in construction in the '80s and did some work for an alphabet agency in one of the sky scrpers and there was a farad cage around the entire floor, perimeter, ceiling and floor.  We wondered what the purpose could be and figured it was survelience counter measures but could have been EMP protection too.

It was surveillance countermeasures, they also hook up a gadget to make the windows vibrate so that a laser pointed at the glass can not pick up what is being said. They do the same thing to parts of embassies and other Govt buildings.

[bafsu92]

Just go with a Trijicon and you won't have to worry about this scenario or batteries either.