[TowerTalk] feedpoint choke for inv L

[Wes Stewart]

I agree, especially with the last sentence.

Wes  N7WS

On 11/20/2018 4:10 AM, Rob Atkinson wrote:
> If the ground system is at or below grade, you don't need a choke.  If
> you find you do need one then that means you don't have enough radials
> down.  This is an example of ham antenna work where it is useful to
> take a look at medium wave broadcast instead of re-inventing the
> wheel.  Broadcasters do not have chokes on their feedlines.  That's
> because they have a lot of radials and the feedline is (nowadays) coax
> under ground.  But even if your feedline is laying on the ground you
> can avoid having to fool with a choke provided you have enough
> radials, so that the return current to the feedpoint is divided so
> much that whatever is on the feedline is insignificant.  And, you need
> plenty of radials anyway, if you want to have a decent antenna.  Put
> down at least 60 radials and see if you have a problem with RF on your
> coax....probably not enough to matter.   Hams are ferrite choke and
> balun crazy...use them in many cases where they aren't needed....
>
> 73
>
> Rob
> K5UJ