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Message: <blockquote data-quote="OKCHunter" data-source="post: 4228771" data-attributes="member: 8534"><p>Solar flares / intense solar activity can disrupt ham radio communication.  But, I’ve been able to communicate on one band or another even during a solar storm.  It’s usually just high background noise and local / regional communication is still possible.  Different bands are also available to hams and work based on various propagation methods.  An example - the 10m band opens-up best when sunspot numbers and solar flux is high, especially in the daytime of the summer months.  I’ve communicated with Africa, Europe, Australia, Japan, and others on 10m recently.  And, it should only get better as we approach the peak of the solar cycle next year.  Other bands such as 40m is great for local regional communication during the day but the band goes “long” at night, essentially eliminating local communication but opening up communication with Europe, Africa, Asia, etc.  At night is when 80m is great for local communication.  The 15m, 17m, and 20m bands are generally useful both day or night.  There are other HF bands available to hams as well.   All this is a very generalized description of HF bands that allow communication without the need for local repeaters when all else fails.  Repeaters can go down similar to cell services during power losses, etc.  There is also repeater communication connected to the internet that allows voice communication worldwide with a handheld transmitter.  But, that mode is also subject to failure in power loss or internet loss.  You will learn about propagation, communication modes, and many other topics as you progress in your licensing for ham radio.</p></blockquote><p></p>

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