Original file (972 × 1,448 pixels, file size: 433 KB, MIME type: image/jpeg)

Summary

Description
English: Channel Master model 4228HD 8 bay VHF/UHF rooftop television antenna. This is a type called a reflective array or "bowtie" antenna. It consists of an array of 8 "bowtie" dipole driven elements mounted in front of a wire screen reflector. The "X" shape of the dipoles gives them a wide bandwidth, apparently wide enough to cover both the VHF band 174-216 MHz and the UHF band 470-700 MHz. Using 4 rows increases the gain in the horizontal direction. Channel Master's specifications say it has 5 dB VHF gain, 12 dB UHF gain, 18 dB front-to-back ratio, and the list price is $109.00. Extending up above the antenna is a lightning rod.
Date
Source Derived from https://www.flickr.com/photos/ajmexico/3121265306/. Alterations to original image: Rotated image CW slightly to justify, cropped out empty sky.
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Licensing

This image, originally posted to Flickr, was reviewed on 17 July 2015 by the administrator or reviewer Ww2censor, who confirmed that it was available on Flickr under the stated license on that date.
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Captions

Reflective array UHF television antenna

Items portrayed in this file

depicts

copyright status

copyrighted

copyright license

Creative Commons Attribution 2.0 Generic

inception

19 December 2008

exposure time

0.002 second

f-number

5.6

focal length

120 millimetre

ISO speed

100

media type

image/jpeg

instance of

photograph

data size

443,216 byte

height

1,448 pixel

width

972 pixel

checksum

52cbdd4aa27738fc45bbe1ee9ec4daff99a9bff6

determination method or standard: SHA-1

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Date/TimeThumbnailDimensionsUserComment
current17:02, 16 July 2015Thumbnail for version as of 17:02, 16 July 2015972 × 1,448 (433 KB)ChetvornoUser created page with UploadWizard

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Allikas: http://en.wikipedia.org/wiki/File:Eight_bay_bowtie_TV_antenna.jpg
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