The N0HR Propfire add-on adds HF radio propagation status and displays it in your browser status bar. Shortwave radio enthusiasts, ham radio operators and others can use this to monitor solar conditions that impact radio propagation.
Here is a little more about N0HR from the official website:
NØHR.com has a completely revamped ham radio links page which includes a rating system, periodic validation and ability to submit new links. It’s a great resource for links to antennas, amplifiers, transceivers, and other amateur radio websites. If you know of some good ham radio websites that are not listed, please add them. We have 1000s of verified links in the system and continue to add new ones. Check it out!
Want to learn more about this amazing add-on for Firefox? Grab N0HR Propfire from the Firefox Add-ons website.