[R-390] EMP

[fred b]

We did some of this stuff for FEMA EOC locations, it involved lots of grounding, MOV's, stuff you can buy from Polyphaser, pages of engineering drawing, and two manuals about six inches thick.

Don't remember everything, but the idea is to channel the EMP energy away from the equipment, phones, generators, antennas to ground.

One engineer explained to us dumb tech that EMP energy is like a high power wide bandwidth lightning strike. 

Fred


--- On Fri, 9/25/09, Steve Toth <stoth47 at yahoo.com> wrote:

> From: Steve Toth <stoth47 at yahoo.com>
> Subject: [R-390] EMP
> To: r-390 at mailman.qth.net
> Date: Friday, September 25, 2009, 12:41 PM
> So, theorectically, what would be
> involved in "hardening" a hamshack?? (understanding that the
> power grid, etc., would be taken out)
>  
> Not being an engineer and having no background in this
> area, my guess would be some sort of shielding on all sides
> of the room, roof and floor (what would be considered
> adequate?); thorough grounding of the shielding and
> associated equipment (would the lightning strike damage
> prevention techniques discussed a little while ago be
> applicable?); and filtering of all wiring coming into and
> out of the room for excessive voltage pulses???  Or would
> even those techniques have their own issues?  Just
> curious.
> 
> 
> 
> 
> 
> 
> 
> -- Steve 
> Woodinville, WA
> Frodo failed..........Obama has the ring.
> 
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam
> protection around 
> http://mail.yahoo.com 
> ______________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:R-390 at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>