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The term "Marconi antenna" usually refers to a two part antenna consisting of a vertical portion and a "reflective" or "ground" portion. When constructed properly, it is very similar to a vertically oriented dipole, in that one element is "up" and the other "down".
The reflective portion is not always a physical element, but often either natural earth ground (where the soil conductivity is sufficient) or ground "radials" - a set of wires along or just beneath the ground that act as the reflective portion.
A Marconi antenna is an omni-directional (same transmit/receive in all directions) antenna that has good long distance characteristics on HF (high frequency) and MW (medium wave, or AM) frequencies.
A Marconi is typically built with a 1/4 wavelength vertical element, and similar length radial(s). For example, the full wavelength for 7MHz is about 133ft. A 1/4 wavelength vertical element (and each radial) would therefore be about 33.5ft.
Most AM broadcast stations use some variation of a Marconi antenna. Since an AM station at 1050 on an AM dial is equal to 1.050MHz and therefore a wavelength of over 990ft, a 1/4 wavelength vertical element would be almost 223ft for that station!
The antenna was originally made using telescopic fiber glass tubes and then covered with a copper film to make them look electrically like a huge copper tube. The antenna was made by a company located in London called Bantex Antennas. This company shut down and the team of engineer was take over and built a new company called Renair Antennae Ltd, they carried manufacturing these antennas for some years.
These antennas were ordered from Marconi to be mount overseas mainly. They were real big monsters!
What else can I help you with?
Why did Guglielmo Marconi die?
Marconi died at the age of 63 after a heart attack.
What country is guglielmo marconi from?
italy
What were Guglielmo Marconi parents' names?
His parents were Giuseppe Marconi, an Italian silk merchant, and his Scots-Irish wife, Annie Jameson.
What is guglielmo marconi's favorite colour?
Blue
What is Marconi most famous for?
He was an Italian inventor, known as the father of long distance radio transmission and for his development of Marconi's law and a radio telegraph system.
Difference between hertz antenna and marconi antenna?
Hertz Antenna is lambda by 2 antenna & marconi antenna is lambda by 4 antenna...
What are Marconi's accomplishments?
marconi invented the radio and the antenna. but did Tesla invent the radio?
How did marconi use kites?
He sometimes used a kite to lift one end of an antenna high into the air to improve its performance.
Did Marconi use a kite to invent radio?
Yes, sort of. He used a kite to create an antenna to carry the radio signal.
How did Gugliemo Marconi use kites in experiments?
He often used a kite to hoist one end of an antenna high into the air to boost its effectiveness.
With what materials did Guglielmo Marconi make the first radio with?
Guglielmo Marconi made the first radio using a transmitter, receiver, and antenna. The key components were a spark gap transmitter, a coherer receiver, and long wire antennas to send and receive wireless signals.
Who is Francesco Paresce Marconi?
Francesco Paresce Marconi is Guglielmo Marconi's grandson and Degna Marconi's son!!! Hope that helps!!!
What is Marconi radio?
marconi radio is just actually the first radio that was invented by marconi.
What did Guillermo Marconi?
it means what was marconi known for.
What is the birth name of Saverio Marconi?
Saverio Marconi's birth name is Francesco Saverio Marconi.
How did marconi die?
marconi died of a heart attack
Did marconi invent the telephone?
marconi invented the telephone
