Re: Transforming your simple Ground Rod into a Ground Anchor : Is It Worth The Work ? - You Decide !


<r2000swler@xxxxxxxxxxx> wrote in message
> By placing the coax inside of a copper tubepipe you have in effect
> created a triax
> cable. Triax >can< (as in might or maybe) solve certain hard to control
> RFI engress issues.
>
I think the ARRL Handbook suggests running coax into the building through a
3-4" diameter tube filled with steel wool as another way of suppressing
coupling along the outside of the shield from inside to outside and thence
to the antenna.

Coiling the co-ax with several turns at the building entrance also helps and
is the common technique at the base of the G5RV balanced feedline to choke
off coupling to the outside of the shield.

Tom


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