An umbrella antenna is a capacitively top-loaded wire monopole antenna, consisting in most cases of a mast fed at the ground end, to which a number of...

height of 270 m (890 ft) 3 umbrella antennas, fixed on 18 guyed lattice masts, height of central masts: 305 metres umbrella antenna, fixed on 13 guyed lattice...

the dipole antenna or 37.5 ohms. Common types of monopole antenna are whip rubber ducky helical random wire umbrella inverted-L and T-antenna folded unipole...

and efficiency of the antenna. High-power stations use variations on the umbrella antenna such as the "delta" and "trideco" antennas, or multiwire flattop...

if the length of the antenna is shorter than 1/4 wavelength. They used grounded or insulated guyed masts with umbrella antennas, or wire-spans across...

to ground anchors. Thus the umbrella antenna uses the guy wires as the top-load part of the antenna. In all these antennas the smaller radiation resistance...

commissioned in 1989 and uses as its tallest antenna tower a 250-metre-tall guyed mast with an umbrella antenna, the tallest structure in Greece. The site...

of the site is taken up by the VLF transmitter's large trideco wire umbrella antenna. This consists of a 748 feet (228 m) central mast with 6 vertical wire...

this antenna in 1946. It is very popular in the United States. The antenna can be erected as horizontal dipole, as sloper, or an inverted-V antenna. With...

The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. It takes its name from...