This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

HF Solar


This widget plugin is directed primarily toward amateur radio enthusiasts
with WordPress blogs. It makes it easy to include banners provided by
N0NBH on your WordPress blog. There are
several banners available, and they provide different types of
information about HF radio wave propagation and solar-terrestrial data.


This widget plugin has been tested on WordPress 2.9.2 and should work
on previous 2.x versions as well. PHP 5.x is required.

Manual Install

  1. Add a directory called ‘hf-solar’ (without the quotes) to your
    ‘/wp-content/plugins/’ directory.
  2. Upload hfsolar.php to ‘/wp-content/plugins/hf-solar/’
  3. Activate the plugin through the ‘Manage Plugins’ page in WordPress.
  4. Choose the size banner you want.
  5. Place the widget in the sidebar using the editor for your theme.

Automatic Install

  1. Download the file.
  2. Go to the Manage Plugins page.
  3. Click the Add New button.
  4. Upload the file.
  5. Active the plugin through the ‘Manage Plugins’ page.
  6. Choose the size banner you want.
  7. Place the widget in the sidebar using the editor for your theme.


What is HF propagation and solar-terrestrial data?

It’s a popular ham radio site where hams lookup information about operators
based on their call sign. It also has lots of other ham radio information.

Am I allowed to do this?

N0NBH allows sites to reference
these banners provided the link to his site is maintained.

Contributors & Developers

“HF Solar” is open source software. The following people have contributed to this plugin.


Translate “HF Solar” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Initial release of HF propagation and solar-terrestrial data.