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Un traliccio di trasmissione (o torre tras … Un traliccio di trasmissione (o torre trasmittente) è un' con la caratteristica principale di impiegare l'intera struttura come antenna. Quest'architettura è comunemente usata per impianti che irradiano nella gamma di frequenze che va dalle VLF alle MF (queste ultime più conosciute fuori dall'ambito radioamatoriale come onde medie), in particolare per la radiofonia in modulazione di ampiezza. La base è fissata su elementi elettricamente isolanti a bassa capacità, spesso di porcellana, per isolarla dal terreno. Un sistema di questo tipo è comparabile ad un'. Un traliccio trasmettitore a Chapel Hill, Carolina del Nord. La tensione di alimentazione della struttura può folgorare chiunque la tocchi: per questo, al fine di limitarne l'accesso, la base è delimitata da una staccionata.Particolare della base: l'energia da irradiare in radiofrequenza nell'etere è fornita al traliccio da un cavo, il quale arriva da un accordatore d'antenna all'interno della sulla destra. L'elemento ceramico marrone isola il manufatto dal terreno. Sulla sinistra sono collocati un sezionatore di terra e uno scaricatore di sovratensione per proteggere l'impianto dai fulmini.L'irradiatore della radio americana KSBN a Spokane, Stato di Washington, raro esempio di traliccio per modulazione d'ampiezza collocato in cima ad un altro manufatto, in questo caso un palazzo.La Torre di Blosenberg a Beromünster, Svizzera, apparato completamente isolato da terra e oggi convertito in sito museale.a terra e oggi convertito in sito museale.
, A mast radiator (or radiating tower) is a … A mast radiator (or radiating tower) is a radio mast or tower in which the metal structure itself is energized and functions as an antenna. This design, first used widely in the 1930s, is commonly used for transmitting antennas operating at low frequencies, in the LF and MF bands, in particular those used for AM radio broadcasting stations. The conductive steel mast is electrically connected to the transmitter. Its base is usually mounted on a nonconductive support to insulate it from the ground. A mast radiator is a form of monopole antenna.st radiator is a form of monopole antenna.
, Ein selbststrahlender Sendemast ist ein Se … Ein selbststrahlender Sendemast ist ein Sendemast, bei dem die gesamte Konstruktion als Antenne wirkt. Er wird häufig als Sendeantenne für Lang- oder Mittelwelle eingesetzt. Gegensatz ist der Antennenträger, der nur als mechanische Halterung für die in seinem oberen Abschnitt angebrachte (relativ kleine) Sendeantenne dient, etwa für UKW-Rundfunk oder Mobilfunk. Je nach Anforderung kann ein selbststrahlender Sendemast gegen Erde isoliert oder auch geerdet sein. Im ersten Fall erfolgt die Einspeisung meist in Bodennähe. Im letzteren Fall muss die Sendeenergie beispielsweise über Pardunen in einer gewissen Höhe in den Mast eingespeist werden.issen Höhe in den Mast eingespeist werden.
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Fessenden's tubular mast radiator from 1906.
, The Blosenbergturm, a freestanding tower antenna in Beromünster, Switzerland
, Typical triangular guyed lattice mast of an AM radio station in Mount Vernon, Washington, US
, An example of a Blaw-Knox mast, Lakihegy Tower, a mast in Hungary built in 1933.
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| rdfs:comment |
A mast radiator (or radiating tower) is a … A mast radiator (or radiating tower) is a radio mast or tower in which the metal structure itself is energized and functions as an antenna. This design, first used widely in the 1930s, is commonly used for transmitting antennas operating at low frequencies, in the LF and MF bands, in particular those used for AM radio broadcasting stations. The conductive steel mast is electrically connected to the transmitter. Its base is usually mounted on a nonconductive support to insulate it from the ground. A mast radiator is a form of monopole antenna.st radiator is a form of monopole antenna.
, Un traliccio di trasmissione (o torre tras … Un traliccio di trasmissione (o torre trasmittente) è un' con la caratteristica principale di impiegare l'intera struttura come antenna. Quest'architettura è comunemente usata per impianti che irradiano nella gamma di frequenze che va dalle VLF alle MF (queste ultime più conosciute fuori dall'ambito radioamatoriale come onde medie), in particolare per la radiofonia in modulazione di ampiezza. La base è fissata su elementi elettricamente isolanti a bassa capacità, spesso di porcellana, per isolarla dal terreno. Un sistema di questo tipo è comparabile ad un'.stema di questo tipo è comparabile ad un'.
, Ein selbststrahlender Sendemast ist ein Se … Ein selbststrahlender Sendemast ist ein Sendemast, bei dem die gesamte Konstruktion als Antenne wirkt. Er wird häufig als Sendeantenne für Lang- oder Mittelwelle eingesetzt. Gegensatz ist der Antennenträger, der nur als mechanische Halterung für die in seinem oberen Abschnitt angebrachte (relativ kleine) Sendeantenne dient, etwa für UKW-Rundfunk oder Mobilfunk.ent, etwa für UKW-Rundfunk oder Mobilfunk.
|
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Mast radiator
, Traliccio di trasmissione
, Selbststrahlender Sendemast
|
