[R-390] EMP

[wb5uom at hughes.net]

I have wanted that for a LONG time  Cecil !!

David/ WB5UOM
----- Original Message ----- 
From: "Cecil Acuff" <chacuff at cableone.net>
To: "Samuel Letzring" <sletz at msn.com>; <physicist at cox.net>;
<r-390 at mailman.qth.net>
Sent: Thursday, September 24, 2009 9:22 PM
Subject: Re: [R-390] EMP


> I just want one big enough to put those booming stereo's in the low riders
> and rice burners that pull up next to or behind you at the red lights..you
> know the ones that make you own rear view mirror blur...
>
> Cecil...:-)
> ----- Original Message ----- 
> From: "Samuel Letzring" <sletz at msn.com>
> To: <physicist at cox.net>; <r-390 at mailman.qth.net>
> Sent: Thursday, September 24, 2009 9:08 PM
> Subject: Re: [R-390] EMP
>
>
> >
> > I do a lot of EMP experiments in my work at Los Alamos NAtional LAb- its
> > pretty intense stuff!! I can generate fields in excess of megavolts/
> > micron ( thats > gigavolts/cm) at frequencies from 10's of MHz to THz!
> > This is enclosed in a stainless steel sphere 1 meter in diameter and 10
cm
> > thick but still the leakage fields kill electronics in the next room!
Its
> > quite a challenge to design electronics that will survive that- but it
can
> > be done! Solid state electronics- if not powered up- will sometimes
> > survive- no solid state devices- inside the sphere survive- whether
> > powered up or not! Even solid state devices- just lying in the sphere-
> > with their leads shorted or not- do  not survive!
> >
> > I also did a lot of EMP experiments in the Air Force back in the 70's at
> > Kirtland AFB- this was when the USAF was trying  to figure out how to
> > harden aircraft and missiles to EMP. We had HUGE EMP generators that you
> > could park a 747 inside- the largest one was one called TRESTLE- a huge
> > all wooden structure ( no metal- since the metal would heat up during
the
> > EMP pulse). B-52's were the hardest to harden- but we did it! In the
first
> > experiments- there were lightning bolts flying around inside the '52's-
> > but with proper bonding- that was all controlled.
> >
> > R-390s and other boatanchors will survive- powered up or not- but I
really
> > have my doubts about the grid- also at Los Alamos- we have very large
> > programs studying the grid and figuring out how to make it more
> > survivable- but it's expensive- and the "SMart GRid" program seems to be
> > only to figure out how to make it more efficient- not more survivable.
> >
> > My biggest worry is not that the Iranians or the North Koreans will
launch
> > a nuclear ground attack- but that they will figure out how to make an "
> > enhanced EMP nuclear weapon" and explode it a 500,000 feet above the US
> > and knock out everything! Or that the Chinese will knock out all our
> > communication satellites and we don't have enough HF gear left for the
> > Navy to communicate. We have become so dependent on satellites for
> > communications, navigation etc. that I don't think anyone left in the
> > military knows how to run a sextant or communicate on HF with CW!
> >
> > Just an old scientist's/officer's viewpoint on things.
> >
> > Sam
> >
> > KE5IRZ
> >
> >
> >> Date: Thu, 24 Sep 2009 21:29:08 -0400
> >> To: R-390 at mailman.qth.net
> >> From: physicist at cox.net
> >> Subject: [R-390] EMP
> >>
> >>
> >> Maybe we should build rebar faraday cages to store all of our
> >> R390A's...;)
> >>
> >>
> >> Jeffrey L. Adams  KG4RZM  Physicist at cox.net
> >>
> >> Mentor of the R390/R390A CD Archive
> >>
> >> Motorola   R390A/URR 1956 14-PH-56    Serial 1409 w/ CY979
> >> Collins    R390A/URR 1952 14214-PH-51 Serial 979 w/ CY979
> >> Collins    R392/URR  1951 3075-PH-51  Serial 252 w/ T195 transmitter
> >> EAC        R390A/URR 1960 23137-PC-60
> >> Hammarlund SP-600-JX-26 1953          Serial 13432
> >> Hammarlund SP-600-JX-17 Diversity     Serial 12384
> >>
> >>
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