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File:2008-07-28 Mast radiator.jpg

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Summary

Description
English: A mast radiator antenna for an AM radio station transmitter in Chapel Hill, North Carolina. The radio frequency current from the transmitter is applied directly to the steel lattice tower, which acts as a monopole antenna element. The tower is supported at its base by a massive porcelain insulator, which insulates it from the ground. The high voltage on the tower can deliver a dangerous shock to anyone that touches it, so it is surrounded by a fence to keep people out. The white shed is called a helix house and contains an antenna tuner matching network to match the impedance of the antenna to the transmitter to allow power to be transferred efficiently to the antenna. The mast is supported by guy wires (faint), which have strain insulators in them to prevent the high voltage on the tower from being conducted to ground.
Date
Source Own work
Author Ildar Sagdejev (Specious)
Permission
(Reusing this file)
Photo by Ildar Sagdejev | Website | Gallery | Flickr | Portfolio
This photograph is published under the free licenses specified. If you drop me a line about how you're using it, I'd love that.

Find me:

Camera location35° 56′ 16.32″ N, 79° 01′ 36.78″ W  Heading=112.5° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
w:en:Creative Commons
attribution share alike
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You are free:
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Under the following conditions:
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You may select the license of your choice.

Captions

Antenna mast of AM radio station in North Carolina
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Items portrayed in this file

depicts

mast radiator

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creator

some value

Wikimedia username: Specious
author name string: Ildar Sagdejev
object of statement has role: photographer
URL: https://commons.wikimedia.org/wiki/user:Specious
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copyright status

copyrighted

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copyright license

GNU Free Documentation License, version 1.2 or later

Creative Commons Attribution-ShareAlike 4.0 International

Creative Commons Attribution-ShareAlike 3.0 Unported

Creative Commons Attribution-ShareAlike 2.5 Generic

Creative Commons Attribution-ShareAlike 2.0 Generic

Creative Commons Attribution-ShareAlike 1.0 Generic

inception

28 July 2008

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source of file

original creation by uploader

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captured with

Canon EOS 400D

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coordinates of the point of view

35°56'16.321"N, 79°1'36.775"W

heading: 112.5 degree

media type

image/jpeg

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checksum

38a081bebce226c58a27e374b0df5938e3567798

determination method or standard: SHA-1

data size

2,754,331 byte

height

3,830 pixel

width

2,553 pixel

exposure time

0.01 second

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instance of

photograph

focal length

18 millimetre

File history

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Date/TimeThumbnailDimensionsUserComment
current05:35, 8 October 2008Thumbnail for version as of 05:35, 8 October 20082,553 × 3,830 (2.63 MB)Specious{{Information |Description={{en|A mast radiator in Chapel Hill, North Carolina.}} |Source=Own work |Author=Ildar Sagdejev (Specious) |Date=2008-07-28 |Permission={{User:Specious/Ref}}

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