On Wed, 9 Sep 2009 13:55:11 +0200, J.F. wrote:
>Użytkownik "RoMan Mandziejewicz" <r...@p...pl> napisał w
>> A niby do czego to uziemienie, skoro jakikolwiek przewód robiłby
>> za dodatkową antenę?
>
>Ja tego nie wymyslilem, tylko gdzies wyczytalem [i nie moge znalezc
>gdzie].

http://en.wikipedia.org/wiki/Warsaw_radio_mast

In the lower half of the mast, there was a vertical steel tube,
attached to the mast's outer structure with large insulators. This
tube was grounded at the bottom, and connected electrically to the
mast structure at half the total height. This technique works by
applying a DC ground at a point of minimum radiofrequency voltage,
conducting static charge to ground without diminishing the radio
energy. Static electrical charge can build up to high values, even at
times of no thunderstorm activity, when such tall structures are
insulated from ground. Use of this technique provides a better
lightning protection than using just a spark gap at the mast feed,
which is standard at most mast radiators insulated against ground.

>
>J.