The World's Largest Public Domain Media Search Engine
Antenne 160m om original

Antenne 160m om original

description

Summary

Français : Antenne radioamateur au-dessus d'un immeuble en France, en 1912. Ce type est appelé antenne L inversée , et est largement utilisé dans la bande radio ondes longues (basse fréquence) des 160 mètres (1,5 MHz à 2 MHz), l'antenne était le type le plus utilisé de la télégraphie sans fil au début du 20ème siècle. Il se compose d'un certain nombre de fils horizontaux parallèles comme des cordes à linges, suspendus par des supports isolés à chaque extrémité, avec des fils verticaux reliés à une extrémité (droite) tombant vers l'émetteur. Les fils verticaux sont l'élément rayonnant; tandis que les fils horizontaux servent de charge pour ajouter de la capacité à l'antenne, pour augmenter le courant dans l'élément vertical, et donc la puissance rayonnée.
English: A wire radiotelegraphy antenna suspended above an apartment house in France, in 1912. This type is called a flattop or inverted L antenna, and is widely used in the longwave (low frequency) radio band, which was the most widely used band during the wireless telegraphy era at the beginning of the 20th century. It consists of a number of parallel horizontal wires like a clothesline, suspended by insulated supports at each end, with vertical wires connected at one end (right) dropping down to the transmitter. The vertical wires are the radiating element; while the horizontal wires serve as a capacitive top-load, to add capacitance to the antenna, to increase the current in the vertical element, and thus the radiated power.

date_range

Date

1912
create

Source

Original uncolorized version of Antenne 160m om.jpg
copyright

Copyright info

Public Domain

Explore more

originals
originals
picryl logo

The World's Largest Public Domain Media Search Engine

PICRYL is the largest media source for public domain images, scans, and documents. PICRYL is an AI-driven search & similarity engine. PICRYL makes the world's public domain media fun to find and easy to use.

Get Archive LLC, creator of PICRYL, endeavors to provide information that it possesses on the copyright status of the content and to identify any other terms and conditions that may apply to the use of the content, however, Get Archive LLC offers no guarantee or assurance that all pertinent information is provided, or that the information is correct in each circumstance.

Permission for use, re-use, or additional use of the content is not required. GetArchive believes there are no usage restrictions or limitations put on content in the U.S. Get Archive LLC does not charge permission and license fees for use of any of the content on PICRYL, however, upon request, GetArchive can provide rights clearance for content for a fee.

Get Archive LLC is the owner of the compilation of content that is posted on the PICRYL website and applications, which consists of text, images, audio, video, databases, tags, design, codes, and software ("Content"). However, Get Archive LLC does not own each component of the compilation displayed and accessible on the PICRYL website and applications. If you have specific questions or information about content, the website, and applications, please contact us.

Developed by GetArchive, 2015-2025