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

Sun, 22 Jun 2003 18:33:15 +0000

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 [email protected]
     100% Slack. since July, 1997 (still free!) SENT D&T are UTC
        Visit my HAM Web SITE at: http://www.qsl.net/ka4inm