"Ian" napisał w wiadomości
...
"Szczepan Bialek" wrote in message
...
Real dipole needs:
"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
by an adjustable metal bar at 328 metres.[2] This technique allowed
adjusting the impedance of the mast for the transmitter and worked by
applying a DC ground at a point of low radiofrequency voltage, to conduct
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 better lightning protection than
using just a spark gap at the mast feed, as is standard at most mast
radiators insulated against ground."
From: http://en.wikipedia.org/wiki/Warsaw_radio_tower
End of discussion.
S*
Good evening Szczepan.
The Warsaw radio mast was not a dipole.
"Large constructed half-wavelength dipole towers include the Warsaw radio
mast - the only half-wave dipole for longwave ever built."
May I remind you that I would appreciate an answer to my question "Are you
discussing resonant or non-resonant aerials, please?". It would help to
clarify what you have in mind,
It seems to me that you do not know what the word "resonans" means.
We are discusing the earth/chassis/ counterpoise and the field electron
emission.
Best Regards,
S*