Message-ID: <32CF539E9AAF4EDB80FFFDA1DA128DEF@AGB>
From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <c0e.370c4fbd.35afb639@aol.com> <006e01c8e788$ca7394c0$0900a8c0@AM> <20080717110533.ji3so2ex15i0w8ok@webmail4.kuleuven.be> <487F2369.3701.24D39C@mike.dennison.ntlworld.com> <fc7eccec0807170324q78bfd6d5y7930cacb50b63d74@mail.gmail.com> <001601c8ea81$06520b20$0301a8c0@mal769a60aa920> <fc7eccec0807201052q35758f02qd1ea206d862e4d0c@mail.gmail.com>
Date: Sun, 20 Jul 2008 21:22:06 +0100
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Subject: Re: LF: satellites/RadCom
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Telstar ?

Some  bedtime reading  :-

http://en.wikipedia.org/wiki/Starfish_Prime

http://glasstone.blogspot.com/2006/03/emp-radiation-from-nuclear-space.html

http://stinet.dtic.mil/cgi-bin/GetTRDoc?AD=A009208&Location=U2&doc=GetTRDoc.pdf

G ..



--------------------------------------------------
From: "Andy Talbot" <andy.g4jnt@googlemail.com>
Sent: Sunday, July 20, 2008 6:52 PM
To: <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: satellites/RadCom

> Which big bang ? A few superpowers may have tested the occasional EMP
> weapon with 'interesting' findings, but no one ever deployed one -
> they all realised the potential for damaging thier own infrastructure
> as well as the target's.  And contrary to all the popular sci-fi films
> and myths of the era, a normal ground-burst or even air-burst of a few
> MT does not generate damaging EMP.  It has to be a true exo-atmopheric
> explosion at a height to do practically no other damage, and of a
> mechanism yielding mainly high energy gamma / X-rays to generate the
> necessary Compton scattering.
>
> The  stories put-about back then were incorrect and partly propaganda,
> but also genuine misunderstanding of the respective countries'
> techology capabilities, and their modus-operandi
>
> Andy  G4JNT
>
> 2008/7/20 mal hamilton <g3kevmal@talktalk.net>:
>> When the big BANG comes you will regret not having learned about
>> VALVES/TUBES and how to use them.
>> These have a good chance of survival when all the chips have FRIED and 
>> being
>> able to use a morse key a bonus.
>> G3KEV
>>
>> ----- Original Message ----- From: "Andy Talbot" 
>> <andy.g4jnt@googlemail.com>
>> To: <rsgb_lf_group@blacksheep.org>
>> Sent: Thursday, July 17, 2008 11:24 AM
>> Subject: Re: LF: satellites/RadCom
>>
>>
>>> Two pijnts...
>>> 1)  Satellites
>>> Having just joined Amsat (because I felt I 'ought' to) I'm less than
>>> impressed with a) Oscar News which has had no technical content in the
>>> two issues so far received, and b) The Amsat -UK web site.  In spite
>>> of supposed to being able to log in I can't after several requests.
>>> Seems there is nothing there anyway
>>> So all in all, don't look to much from the UK Am satellite scene.
>>>
>>> 2)  Constructional articles
>>> Radcom is always looking out for things.  My new column can continue
>>> based on years of my own-experimentation and building in quintillions
>>> of different subject areas from DC to pink light, digits and analogue,
>>> but I would like input from others.   Anything that isn't yet another
>>> wire antenna or a new H-Mode mixer, and certainly no valves would be
>>> welcome; mid-range to upper end technology is preferred using
>>> modern(ish, in amateur terms) devices.  Don't want to cover simple
>>> basics, that is best left to Eamon and Ian in their columns.
>>>
>>> Waiting...
>>>
>>> Andy G4JNT
>>> www.scrbg.org/g4jnt
>>>
>>
>>
>>
>
>
>
> -- 
> Andy G4JNT
> www.scrbg.org/g4jnt
>
>
>
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> 14:01
>
>
>