Image: Superturnstile Tx Muehlacker

Size of this preview: 375 × 598 pixels. Other resolutions: 150 × 240 pixels | 641 × 1,023 pixels.

Original image ‎(641 × 1,023 pixels, file size: 70 KB, MIME type: image/jpeg)

Description: 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.
Author: Hans-Peter Scholz, Birkenfeld (Enzkreis), Germany
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes

Image usage

The following page links to this image:

Radio

All content from Kiddle encyclopedia articles (including the article images and facts) can be freely used under Attribution-ShareAlike license, unless stated otherwise.