Great Circle Map of the World centred on the Kingdom
of Fife, Scotland. This shows you the shortest possible path from
Scotland to any other place in the world. As used by radio waves and
aeroplanes !
What parts of the world can you hear right now in Dunfermline ?
Click here to find out !!
Vertical HF Antennas Vertical antennas are used far less than horizontal antennas throughout most of the HF spectrum, because throughout most of the HF spectrum complex ground and sea water reflection coefficients tend to mutilate the ideal radiation patterns that could be achieved over perfectly conducting soil or water. Because ground conditions out to considerable distance from a vertical radiator significantly affect its performance, identical vertical antennas installed at different places often have substantially different performance. Buried, surface or elevated ground radials should be used near a vertical radiator, because nearby ground conditions out to about ? wavelength have the greatest effect. The greater the distance between the bottom end of a vertical radiator and earth, the less important ground radials become and the longer their lengths must be if they are to be effective.
