|
lol, I always do that at the radio end. Maybe
because I wad it up, not coil it up?
----- Original Message -----
Sent: Sunday, October 08, 2006 8:35
AM
Subject: Re: [WISPA] lightning
Good point - also, I forgot to mention the other reason I lost so
many CPE's - don't leave a big roll if extra cable - that lowers the
impedance.
On 10/8/06, Jason
<[EMAIL PROTECTED]>
wrote:
I
use ferrite beads for the same reason. Sometimes I use 2; one at
the
radio and one right before the cables enter the house. DO
NOT put them
on a ground wire since that's where you want the
lightning's current to
go. Because its current has such a fast
rise and fall time, lightning
behaves like ac or rf. That's
why ground wires are supposed to be as
straight as possible, and if you
have to bend it, you should make the
radius of the bend as large as you
can. A tight bend acts as a coil
(increased impedance) and
will cause the lightning to look for a better
path. Ferrite
beads do the same thing. By putting a ferrite on the
cables,
you still let your signals through, but it looks less inviting
for the
lightning.
Jason
Jenco Wireless wrote:
> Contrary to
popular belief, lightning likes to follow the path of
> least
inductance. Inductance is the resistance to a change in
current
> flow. All I can say is that they have worked for
me.
>
>
>
>
>
> On 10/7/06, *Dylan
Oliver* < [EMAIL PROTECTED]
>
<mailto:[EMAIL PROTECTED]>>
wrote:
>
> On 10/7/06, *Jenco Wireless*
< [EMAIL PROTECTED]
>
<mailto:[EMAIL PROTECTED]>>
wrote:
>
> http://pdfcatalog.digikey.com/T063/1150.pdf#search=%22digikey%20240-2318-nd%22
>
<http://pdfcatalog.digikey.com/T063/1150.pdf#search=%22digikey%20240-2318-nd%22
>
>
> I
use the 240-2318-ND (towards the bottom of the
page). Just
>
wrap the Ethernet cable through it as many times as
possible.
> You have
to purchase 100 to get that low, low price I
> mentioned
:-). We are located in
Ohio.
>
>
> Sounds like this is
more for reducing EMI .. how do you figure
it
> protects from lightning
damage?
>
>
> Best,
> --
> Dylan
Oliver
> Primaverity,
LLC
> --
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