[Towertalk] Preventing parasitic action of steel guy cables

Richard Karlquist richard@karlquist.com
Fri, 13 Dec 2002 08:36:24 -0800


> Assemble groups of split ferrite beads and slip them over the guys, 
> positioning them every few feet to choke off RF currents. 

> If it works on coax, shouldn't this also work on guy 
> cables? Perhaps someone 
> has already tried this.
> 
> Which type beads would you recommend and at what spacing?
> 

I thought of that a long time ago, but I've
never modeled it.  However, your premise
that "it works with coax" is somewhat
questionable.  It doesn't work all that
well with coax and you need a boatload
of ferrite cores.  You would need to determine
how many cores per foot are needed and
what they cost.  I think you might find
it is not cost effective.

Fair-Rite 73 material would be the best
choice, but there is way more 43 material
out there in the surplus market.  It all
comes down to economics.

Rick Karlquist    N6RK
richard@karlquist.com
www.n6rk.com
www.karlquist.com