File:Superturnstile_Tx_Muehlacker.JPG
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Summary
DescriptionSuperturnstile Tx Muehlacker.JPG |
English: Superturnstile antenna on the Muehlacker television transmitter, Germany. Also called a "batwing antenna", this is a common type of television transmitting antenna. Opposing pairs of "wings" function as a dipole antenna, with each pair of crossed dipoles fed 90° out of phase to create an omnidirectional radiation pattern. Each radiator unit consisting of two pairs of batwings is called a "bay". The vertical collinear stack of batwing "bays" increases the gain of the antenna, concentrating the radiation in the horizontal direction so little of the power is radiated into the sky or down into the ground and wasted. The advantage of the "batwing" design is that it has a wide bandwidth so one antenna design can cover a large part of the VHF television band, and can be used to transmit multiple channels if desired. |
Date | 20070223 1151UTC |
Source | Own work |
Author | Hans-Peter Scholz, Birkenfeld (Enzkreis), Germany |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:57, 5 March 2007 | 641 × 1,023 (70 KB) | Zwergelstern | {{Information |Description=Superturnstile Antenna on the Muehlacker Transmitter, Germany |Source=own work |Date=20070223 1151UTC |Author=Hans-Peter Scholz, Birkenfeld (Enzkreis), Germany |Permission=n.a. |other_versions=n.a. }} |
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Camera manufacturer | Panasonic |
---|---|
Camera model | DMC-FZ20 |
Exposure time | 1/500 sec (0.002) |
F-number | f/4.6 |
ISO speed rating | 80 |
Date and time of data generation | 12:51, 23 February 2007 |
Lens focal length | 72 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Nero PhotoSnap 1, 2, 0, 19 |
File change date and time | 02:08, 24 February 2007 |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 12:51, 23 February 2007 |
Exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 432 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
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