World Library  
Flag as Inappropriate
Email this Article

Antenna rotator

Article Id: WHEBN0004246605
Reproduction Date:

Title: Antenna rotator  
Author: World Heritage Encyclopedia
Language: English
Subject: Crown Equipment Corporation, Fractal antenna, Antenna equivalent radius, Antenna efficiency, Antenna boresight
Publisher: World Heritage Encyclopedia

Antenna rotator

An antenna rotator unit is visible in the middle of the mast.

An antenna rotator is a device which is used to change the orientation of a directional antenna. Most antenna rotators have two parts, the rotator unit and the controller. The controller is normally placed near the equipment which the antenna is connected to, while the rotator is mounted on the antenna mast directly below the antenna.

Rotators are commonly used in amateur radio and military communications installations. They are also used with TV and FM antennas, where stations are available from multiple directions, as the cost of a rotator is significantly less than that of installing a second antenna to receive stations from multiple directions.

Rotators are manufactured for different sizes of antennas and installations. For example, a consumer TV antenna rotator has enough power to turn a TV/FM or small Ham antenna. These units typically cost around US$70.

Heavy-duty Ham rotators are designed to turn extremely large, heavy, high frequency (shortwave) beam antennas, but cost hundreds and possibly thousands of dollars.

As seen in the center of the reference picture, we can see an AzEl installation (abbreviation for Azimuth/Elevation). It is a rotator type that can control the azimuth and also the elevation direction of an antenna system or array. This type of antenna configuration is use in Amateur radio satellite or EME communication for example.

SatNOGS version 2 ground station deployed during FOSDEM 2015

A popular AzEl rotator system for a typical small antenna array as shown in the reference picture would be the Yaesu G-5500.

An open hardware AzEl rotator system is provided by the SatNOGS Groundstation project.

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.