[CW] Re: CW in Emergency HF Comms System...

[KD5NWA]

I hope you don't believe everything you read in newspapers and magazines, 
they have been know to exaggerate so they can sell more issues.

I think we need to look it up from reliable sources, they have had air 
burst nuclear testing in the past where they had EMP and the test equipment 
survived, I believed it was only equipment that were connected to wires 
long enough  to pickup a sizable current that burned up, such as 
telephones, radios with wire antennas, and power equipment. The Russians 
did a lot of testing on EMP and they were convinced that their tube 
equipment would survive.

Anyway where I live it's more practical to be concerned about tornadoes and 
ice storms.

At 01:33 PM 6/22/2003, Ronald KA4INM Youvan wrote:
>Hi all:
>
>   I think you are making assumptions that may not be true.
>   When I first read about EMP pulse damage, probably in a magazine, it 
> said everything within a 100 or more mile circle will be burnt out, every 
> vehicle would instantly become inoperative because their starter motors, 
> generators, every light bulb would be destroyed, and everything 
> electrical within the circle will be burnt out.  I said nothing 
> electrical would survive.
>  I assume a magnetic pulse powerful enough to arc across the terminals of 
> a un-energized starter motor causing enough current to damage the 
> windings will burn open the filament of every vacuum tube no mater where 
> it is, unless protected from the magnetic field.  I also assume a simple 
> box made of mu-metal will be insufficient, as it would become over 
> saturated.  I regret not being able to locate this information now, but 
> this was not in a comic book, possibly time magazine.  We all need to 
> research this more.
>   I had no idea this thread involved EMP pulse damage when I suggested 
> very high speed CW would be superior to PSK31 in a computer to computer 
> traffic circuit.
>
>   Ron   73
>
>>, , , for it's input protection diodes and the small junctions are going 
>>to be molten metal like the rest of the unprotected solid state equipment.
>
>>The point I was trying to make is first, one has to beg, borrow, steal, 
>>liberate, buy, build, a VACUUM TUBE backup, which, outside of specially 
>>hardened military rigs is the only comm equipment which will survive a 
>>serious EMP pulse.
>--
>        73 (= Best Regards) de: Ron ka4inm@tampabay.rr.com
>     100% Slack. since July, 1997 (still free!) SENT D&T are UTC
>        Visit my HAM Web SITE at: http://www.qsl.net/ka4inm
>
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Cecil
KD5NWA