[R-390] EMP

[JRFKE5RI at aol.com]

Amen to that, Brother.  When I can feel music (noise)  from a car two 
blocks away, it makes me want to blow it up!
 
John
KE5RI
 
 
In a message dated 9/24/2009 7:22:40 P.M. Pacific Daylight Time,  
chacuff at cableone.net writes:

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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