File:Harold E Holt Naval Base.jpg
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Summary
DescriptionHarold E Holt Naval Base.jpg |
English: Naval Communication Station Harold E. Holt near Exmouth, Western Australia. The radio masts are part of a large wire antenna which is used to transmit very low frequency (VLF) radio waves to communicate with submerged submarines. This type of antenna is known as a "Goliath", a type of umbrella antenna, but has been heavily modified. It consists of a ring of steel masts which support a network of horizontal cables radiating from the central mast. The central mast acts as the radiating element, while the horizontal cables serve as a capacitive top-load, creating a large capacitor with the ground. This serves to increase the current in the central radiator, increasing the radiated power. |
Date | |
Source | Own work |
Author | Nachoman-au |
Camera location | 21° 54′ 33.08″ S, 114° 07′ 54.8″ E | View this and other nearby images on: OpenStreetMap | -21.909190; 114.131890 |
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Licensing
I, the copyright holder of this work, hereby publish it under the following licenses:
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.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | ||
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license.
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Items portrayed in this file
depicts
28 July 2003
21°54'33.08"S, 114°7'54.80"E
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:00, 28 December 2005 | 1,280 × 960 (162 KB) | commons>Nachoman-au~commonswiki | Photo taken (28th July 2003) and supplied by Nachoman-au. Naval Communication Station Harold E. Holt near Exmouth, Western Australia. [[Category:Exmouth, Western Australia] |
File usage
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Image title | DCF 1.0 |
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Camera manufacturer | Minolta Co., Ltd. |
Camera model | DiMAGE 7i |
Exposure time | 1/750 sec (0.0013333333333333) |
F Number | f/6.7 |
ISO speed rating | 100 |
Date and time of data generation | 15:13, 28 July 2003 |
Lens focal length | 26.9921875 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | ACD Systems Digital Imaging |
File change date and time | 00:29, 24 September 2003 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.1 |
Date and time of digitizing | 15:13, 28 July 2003 |
APEX brightness | 10 |
APEX exposure bias | 0 |
Maximum land aperture | 3.5 APEX (f/3.36) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 953 |
Color space | sRGB |
Custom image processing | Custom process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 109 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Distant view |
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