About this site

This site aims to provide radio amateurs with easy-to-use tools to help them design simple, light but effective wire antennas which are especially suitable for portable use while participating in any of the several amateur radio outdoor award schemes.

The site is modelled on an earlier and much simpler designer for linked dipoles which, at the time of writing (January 2025), is still to be found here in the SOTA (Summits On The Air) website.  The basic format of that page was taken over, and subsequently greatly improved and enhanced; this first new page would form the basis of the portable-antennas site's other antenna design pages.  New antenna types were added gradually to the site's portfolio as time permitted.

Antenna types

Currently, the site offers tools to help the user design nine different types of portable wire antennas. Detailed notes covering each antenna type are to be found in the support page.

 

Contact form

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Acknowledgments

We've recently updated the software used in this site to generate antenna radiation plots data, and also the plot routines themselves. By developing our own software to analyze the NEC-generated data, and our own chart-plotting routines, we have eliminated several third-party software "plugins". This has resulted in tighter, faster data flow to you, the user.

We are grateful for the opportunity to use these resources, and acknowledge our debt of gratitude to their respective developers.

Please note:  due to the reliance on sizeable graphics and groups of controls in this site, it is not suited to display on small screens. We apologize for any inconvenience this may cause.

 

portable-antennas.com - Site health monitoring

We aim to keep the uptime of our website server at a 99.9% level. In order to keep a close watch on this, we are pleased to make use of the services of the live dashboard provided by UptimeRobot. This service is offered free of charge to non-profit hobby-oriented sites like portable-antennas.com. Click here to view uptime: UptimeRobot logo
 

Disclaimer

All information on this web site is provided "as is", for general information purposes only, to the amateur radio community and those with an interest in radio technical matters.

The operator of this web site makes no representations or warranties of any kind, express or implied, about the content, completeness, accuracy, reliability, legality, suitability or availability, with respect to the website or the information, products, services, or related graphics contained on the website, for any purpose.  Any reliance you place on such information is therefore strictly at your own risk.