[TowerTalk] Re: lightning suppression on cable

[Red]

A high percentage of the energy in a lightning strike is in the spectrum 
under 1 MHz.  I don't think tying knots in the line will impede it much.

73 de WOØW

James wrote:

>>I get both TV and Internet via TV cable.  It is the last conductor coming
>>into my house that is not protected by a lightning or surge suppressor, or
>>disconnected when not in use.  Can anyone suggest an appropriate
>>suppressor for this purpose that will pass both TV and 2-way Internet
>>signals (low HF to high UHF)?
>>    
>>
>
>I've used commercial grade coax lightning arrestors for commercial
>two-way and cellular antennas. Very expensive, but the work and are
>almost invisible when you do a TDR line sweep, even at 1900 MHz.
>
>At home, I tie six knots in my power, control, and antenna lines before
>they come into the house. Eveything is inside a metal box WELL grounded
>with several eight foot long grounding rods. The high "frequency" of 
>a lightning bolt (actually the DV/DT) has trouble even making a right
>angle bend, much less an entire knot. For this reason, ground wires 
>need to be routed to a ground with no turns; but if neccessary, a gentle
>curve..
>
>
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