Saturday, December 24, 2016

Simple Ham Radio Antennas--WB4IUY's Random Blog: Great Fan Dipole Diagram. Post #991.

WB4IUY's Random Blog: Great Fan Dipole Diagram
(http://wb4iuy.blogspot.com/2011/11/11/great-fan-dipole-diagram.html).
Accessed on 24 December 2016, 21:45 hrs, UTC.
Author:  Dave (WB4IUY).
Please click title or enter the title URL into your browser to read the full article.

Comment:

If you want multiband HF coverage and can only erect one antenna for that purpose, you may want to consider the classic "Fan Dipole" which has served the Amateur Radio community for many decades.

In this post, Dave (WB4IUY) describes a fan dipole created by YC8PVU which can cover several HF Amateur Radio bands with just one antenna using a single 50 ohm coaxial cable feed line.  You can add 160 meters, any WARC band, and event 6 meters using the same concept. This antenna doesn't require an antenna transmatch (i.e. "tuner") and automatically band switches.  Tuning is a bit critical, since the antenna elements are fairly close together.  But, as an all around multiband HF antenna, the fan dipole works very well, especially for radio amateurs with limited space on their urban lots.

I've also used this design in an inverted vee configuration with good results. This antenna would make an excellent portable or emergency antenna.

For the latest Amateur Radio news and information, please visit these web sites:

http://www.HawaiiARRL.info.
https://oahuarrlnews.wordpress.com.
https://bigislandarrlnews.wordpress.com.
http://www.kh6jrm.info (breaking news for radio amateurs).
http://hawaiisciencedigest.com (latest science and technology news).

Be sure to check out the blog sidebars for additional antenna and propagation articles.  These news feeds are updated daily.

Opinions expressed in this blog are mine unless otherwise stated.

Thanks for joining us today!

Merry Christmas and a Happy New Year from the Island of Hawaii.

Russ Roberts (KH6JRM).